<PAGE> PAGE 1
000 B000000 07/31/97
000 C000000 0000081259
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 THE GEORGE PUTNAM FUND OF BOSTON
001 B000000 811-58
001 C000000 6172921000
002 A000000 ONE POST OFFICE SQUARE
002 B000000 BOSTON
002 C000000 MA
002 D010000 02109
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A000001 PUTNAM INVESTMENT MANAGEMENT, INC.
008 B000001 A
008 C000001 801-7974
008 D010001 BOSTON
008 D020001 MA
008 D030001 02109
011 A000001 PUTNAM MUTUAL FUNDS CORP.
011 B000001 8-5088
011 C010001 BOSTON
011 C020001 MA
011 C030001 02109
012 A000001 PUTNAM INVESTOR SERVICES
012 B000001 84-401299
012 C010001 BOSTON
012 C020001 MA
012 C030001 02109
013 A000001 PRICE WATERHOUSE LLP
013 B010001 BOSTON
013 B020001 MA
<PAGE> PAGE 2
013 B030001 02110
015 A000001 PUTNAM FIDUCIARY TRUST COMPANY
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02109
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 94
019 C000000 PUTNAMFUND
020 A000001 EDWARD (A.G.) & SONS INC.
020 B000001 43-0895477
020 C000001 241
020 A000002 BEAR STERNS & CO.
020 B000002 13-4946705
020 C000002 208
020 A000003 MERRILL LYNCH, PIERCE, FENNER & SMIT, INC.
020 B000003 13-5674085
020 C000003 206
020 A000004 PAINEWEBBER INC.
020 B000004 13-2638166
020 C000004 180
020 A000005 SOLOMAN BROTHERS INC.
020 B000005 13-3082694
020 C000005 162
020 A000006 GOLDMAN SACHS & CO.
020 B000006 13-5108880
020 C000006 115
020 A000007 BRIDGE TRADING CO.
020 B000007 43-1034850
020 C000007 80
020 A000008 STANDARD & POOR'S SECURITIES, INC.
020 B000008 22-2294525
020 C000008 77
020 A000009 LEHAMN BROTHERS
020 B000009 13-2518466
020 C000009 76
020 A000010 MORGAN STANLEY INC.
020 B000010 13-2655998
020 C000010 72
021 000000 2798
022 A000001 LEHMAN BROTHERS
022 B000001 13-2518466
022 C000001 10545911
022 D000001 796443
022 A000002 GOLDMAN SACHS & CO.
022 B000002 13-5108880
022 C000002 1671848
022 D000002 483864
022 A000003 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
<PAGE> PAGE 3
022 B000003 13-5674085
022 C000003 716068
022 D000003 403156
022 A000004 MORGAN (J.P.) SECURITIES INC.
022 B000004 13-3224016
022 C000004 795348
022 D000004 100857
022 A000005 SALOMON BROTHERS INC.
022 B000005 13-3082694
022 C000005 487107
022 D000005 374243
022 A000006 CREDIT SUISSE FIRST BOSTON
022 C000006 231586
022 D000006 223920
022 A000007 UBS SECURITIES
022 B000007 13-2932996
022 C000007 122904
022 D000007 62994
022 A000008 A FIRST SECURITIES
022 C000008 167444
022 D000008 654
022 A000009 MORGAN STANLEY
022 B000009 13-2655998
022 C000009 55078
022 D000009 83997
022 A000010 DEUTSCHE MORGAN GRENFELL
022 C000010 38294
022 D000010 84312
023 C000000 15638036
023 D000000 3081370
024 000000 N
025 D000001 0
025 D000002 0
025 D000003 0
025 D000004 0
025 D000005 0
025 D000006 0
025 D000007 0
025 D000008 0
026 A000000 Y
026 B000000 Y
026 C000000 Y
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 Y
026 G020000 Y
026 H000000 N
027 000000 Y
028 A010000 147076
028 A020000 21807
<PAGE> PAGE 4
028 A030000 0
028 A040000 53349
028 B010000 158612
028 B020000 3
028 B030000 0
028 B040000 51592
028 C010000 209128
028 C020000 2
028 C030000 0
028 C040000 69156
028 D010000 129961
028 D020000 26079
028 D030000 0
028 D040000 64588
028 E010000 116386
028 E020000 3
028 E030000 0
028 E040000 95447
028 F010000 213519
028 F020000 6
028 F030000 0
028 F040000 63704
028 G010000 974682
028 G020000 47900
028 G030000 0
028 G040000 397836
028 H000000 974682
029 000000 Y
030 A000000 6104
030 B000000 5.75
030 C000000 3.50
031 A000000 1662
031 B000000 0
032 000000 4442
033 000000 0
034 000000 Y
035 000000 754
036 A000000 N
036 B000000 0
037 000000 N
038 000000 0
039 000000 N
040 000000 Y
041 000000 Y
042 A000000 0
042 B000000 0
042 C000000 100
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
<PAGE> PAGE 5
042 H000000 0
043 000000 12102
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.000
048 A010000 500000
048 A020000 0.650
048 B010000 500000
048 B020000 0.550
048 C010000 500000
048 C020000 0.500
048 D010000 5000000
048 D020000 0.450
048 E010000 5000000
048 E020000 0.425
048 F010000 5000000
048 F020000 0.405
048 G010000 5000000
048 G020000 0.390
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 21500000
048 K020000 0.380
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 Y
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 N
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 Y
054 M000000 Y
054 N000000 N
054 O000000 Y
055 A000000 N
055 B000000 N
<PAGE> PAGE 6
056 000000 N
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 500
062 A000000 N
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 0.0
066 A000000 Y
066 B000000 N
066 C000000 N
066 D000000 N
066 E000000 Y
066 F000000 N
066 G000000 N
067 000000 Y
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 Y
070 B010000 Y
070 B020000 Y
070 C010000 N
070 C020000 N
070 D010000 Y
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 Y
070 F020000 N
070 G010000 N
<PAGE> PAGE 7
070 G020000 Y
070 H010000 Y
070 H020000 Y
070 I010000 N
070 I020000 Y
070 J010000 Y
070 J020000 N
070 K010000 Y
070 K020000 Y
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 Y
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 N
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 4910903
071 B000000 3888377
071 C000000 2886207
071 D000000 135
072 A000000 12
072 B000000 82243
072 C000000 53722
072 D000000 0
072 E000000 0
072 F000000 15176
072 G000000 34
072 H000000 0
072 I000000 7000
072 J000000 -40
072 K000000 188
072 L000000 115
072 M000000 70
072 N000000 379
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 68
072 S000000 44
072 T000000 12102
072 U000000 0
072 V000000 0
072 W000000 111
072 X000000 35247
<PAGE> PAGE 8
072 Y000000 0
072 Z000000 100718
072AA000000 229478
072BB000000 0
072CC010000 505535
072CC020000 0
072DD010000 73837
072DD020000 19405
072EE000000 92386
073 A010000 0.6700
073 A020000 0.5500
073 B000000 0.9100
073 C000000 0.0000
074 A000000 4404
074 B000000 37191
074 C000000 124548
074 D000000 531215
074 E000000 21058
074 F000000 2609995
074 G000000 0
074 H000000 0
074 I000000 784684
074 J000000 149024
074 K000000 0
074 L000000 45987
074 M000000 0
074 N000000 4308106
074 O000000 180031
074 P000000 7255
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 80866
074 S000000 0
074 T000000 4039954
074 U010000 137611
074 U020000 47221
074 V010000 18.95
074 V020000 18.82
074 W000000 0.0000
074 X000000 137696
074 Y000000 1128
075 A000000 0
075 B000000 3006462
076 000000 0.00
077 A000000 Y
077 B000000 Y
077 C000000 Y
078 000000 N
080 A000000 FEDERAL INSURANCE COMPANY
<PAGE> PAGE 9
080 B000000 NATIONAL UNION FIRE INSURANCE COMPANY
080 C000000 50000
081 A000000 Y
081 B000000 93
082 A000000 N
082 B000000 0
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
SIGNATURE PAUL BUCUVALAS
TITLE VICE PRESIDENT
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
The George Putnam Fund of Boston
</LEGEND>
<SERIES>
<NUMBER> 4
<NAME> CLASS A
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> JUL-31-1997
<PERIOD-END> JUL-31-1997
<INVESTMENTS-AT-COST> 3,449,814,815
<INVESTMENTS-AT-VALUE> 4,108,690,001
<RECEIVABLES> 194,764,110
<ASSETS-OTHER> 4,652,322
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,308,106,433
<PAYABLE-FOR-SECURITIES> 180,030,624
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 88,121,679
<TOTAL-LIABILITIES> 268,152,303
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 3,184,655,167
<SHARES-COMMON-STOCK> 137,611,000
<SHARES-COMMON-PRIOR> 95,751,649
<ACCUMULATED-NII-CURRENT> 4,134,739
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 192,561,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 658,603,224
<NET-ASSETS> 4,039,954,130
<DIVIDEND-INCOME> 53,722,731
<INTEREST-INCOME> 82,242,974
<OTHER-INCOME> 0
<EXPENSES-NET> 35,247,467
<NET-INVESTMENT-INCOME> 100,718,238
<REALIZED-GAINS-CURRENT> 229,478,035
<APPREC-INCREASE-CURRENT> 505,535,233
<NET-CHANGE-FROM-OPS> 835,731,506
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (73,837,380)
<DISTRIBUTIONS-OF-GAINS> (92,386,949)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 57,561,340
<NUMBER-OF-SHARES-REDEEMED> (24,717,591)
<SHARES-REINVESTED> 9,015,602
<NET-CHANGE-IN-ASSETS> 1,832,366,408
<ACCUMULATED-NII-PRIOR> 15,363,543
<ACCUMULATED-GAINS-PRIOR> 97,653,721
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 15,175,880
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 36,518,008
<AVERAGE-NET-ASSETS> 1,976,089,001
<PER-SHARE-NAV-BEGIN> 15.82
<PER-SHARE-NII> .60
<PER-SHARE-GAIN-APPREC> 4.11
<PER-SHARE-DIVIDEND> (.67)
<PER-SHARE-DISTRIBUTIONS> (.91)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 18.95
<EXPENSE-RATIO> 1.06
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
The George Putnam Fund of Boston
</LEGEND>
<SERIES>
<NUMBER> 4
<NAME> CLASS B
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> JUL-31-1997
<PERIOD-END> JUL-31-1997
<INVESTMENTS-AT-COST> 3,449,814,815
<INVESTMENTS-AT-VALUE> 4,108,690,001
<RECEIVABLES> 194,764,110
<ASSETS-OTHER> 4,652,322
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,308,106,433
<PAYABLE-FOR-SECURITIES> 180,030,624
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 88,121,679
<TOTAL-LIABILITIES> 268,152,303
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 3,184,655,167
<SHARES-COMMON-STOCK> 47,221,035
<SHARES-COMMON-PRIOR> 27,660,741
<ACCUMULATED-NII-CURRENT> 4,134,739
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 192,561,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 658,603,224
<NET-ASSETS> 4,039,954,130
<DIVIDEND-INCOME> 53,722,731
<INTEREST-INCOME> 82,242,974
<OTHER-INCOME> 0
<EXPENSES-NET> 35,247,467
<NET-INVESTMENT-INCOME> 100,718,238
<REALIZED-GAINS-CURRENT> 229,478,035
<APPREC-INCREASE-CURRENT> 505,535,233
<NET-CHANGE-FROM-OPS> 835,731,506
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (19,404,724)
<DISTRIBUTIONS-OF-GAINS> (29,105,446)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 21,764,323
<NUMBER-OF-SHARES-REDEEMED> (4,971,519)
<SHARES-REINVESTED> 2,767,490
<NET-CHANGE-IN-ASSETS> 1,832,366,408
<ACCUMULATED-NII-PRIOR> 15,363,543
<ACCUMULATED-GAINS-PRIOR> 97,653,721
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 15,175,880
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 36,518,008
<AVERAGE-NET-ASSETS> 634,108,385
<PER-SHARE-NAV-BEGIN> 15.74
<PER-SHARE-NII> .46
<PER-SHARE-GAIN-APPREC> 4.08
<PER-SHARE-DIVIDEND> (.55)
<PER-SHARE-DISTRIBUTIONS> (.91)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 18.82
<EXPENSE-RATIO> 1.81
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
The George Putnam Fund of Boston
</LEGEND>
<SERIES>
<NUMBER> 4
<NAME> CLASS M
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> JUL-31-1997
<PERIOD-END> JUL-31-1997
<INVESTMENTS-AT-COST> 3,449,814,815
<INVESTMENTS-AT-VALUE> 4,108,690,001
<RECEIVABLES> 194,764,110
<ASSETS-OTHER> 4,652,322
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,308,106,433
<PAYABLE-FOR-SECURITIES> 180,030,624
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 88,121,679
<TOTAL-LIABILITIES> 268,152,303
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 3,184,655,167
<SHARES-COMMON-STOCK> 9,963,033
<SHARES-COMMON-PRIOR> 3,147,719
<ACCUMULATED-NII-CURRENT> 4,134,739
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 192,561,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 658,603,224
<NET-ASSETS> 4,039,954,130
<DIVIDEND-INCOME> 53,722,731
<INTEREST-INCOME> 82,242,974
<OTHER-INCOME> 0
<EXPENSES-NET> 35,247,467
<NET-INVESTMENT-INCOME> 100,718,238
<REALIZED-GAINS-CURRENT> 229,478,035
<APPREC-INCREASE-CURRENT> 505,535,233
<NET-CHANGE-FROM-OPS> 835,731,506
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (3,535,939)
<DISTRIBUTIONS-OF-GAINS> (4,503,492)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7,413,996
<NUMBER-OF-SHARES-REDEEMED> (1,055,770)
<SHARES-REINVESTED> 457,088
<NET-CHANGE-IN-ASSETS> 1,832,366,408
<ACCUMULATED-NII-PRIOR> 15,363,543
<ACCUMULATED-GAINS-PRIOR> 97,653,721
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 15,175,880
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 36,518,008
<AVERAGE-NET-ASSETS> 112,016,999
<PER-SHARE-NAV-BEGIN> 15.74
<PER-SHARE-NII> .53
<PER-SHARE-GAIN-APPREC> 4.06
<PER-SHARE-DIVIDEND> (.60)
<PER-SHARE-DISTRIBUTIONS> (.91)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 18.82
<EXPENSE-RATIO> 1.56
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
The George Putnam Fund of Boston
</LEGEND>
<SERIES>
<NUMBER> 4
<NAME> CLASS Y
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> JUL-31-1997
<PERIOD-END> JUL-31-1997
<INVESTMENTS-AT-COST> 3,449,814,815
<INVESTMENTS-AT-VALUE> 4,108,690,001
<RECEIVABLES> 194,764,110
<ASSETS-OTHER> 4,652,322
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,308,106,433
<PAYABLE-FOR-SECURITIES> 180,030,624
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 88,121,679
<TOTAL-LIABILITIES> 268,152,303
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 3,184,655,167
<SHARES-COMMON-STOCK> 18,772,462
<SHARES-COMMON-PRIOR> 13,095,592
<ACCUMULATED-NII-CURRENT> 4,134,739
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 192,561,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 658,603,224
<NET-ASSETS> 4,039,954,130
<DIVIDEND-INCOME> 53,722,731
<INTEREST-INCOME> 82,242,974
<OTHER-INCOME> 0
<EXPENSES-NET> 35,247,467
<NET-INVESTMENT-INCOME> 100,718,238
<REALIZED-GAINS-CURRENT> 229,478,035
<APPREC-INCREASE-CURRENT> 505,535,233
<NET-CHANGE-FROM-OPS> 835,731,506
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (11,248,863)
<DISTRIBUTIONS-OF-GAINS> (13,502,169)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 8,877,256
<NUMBER-OF-SHARES-REDEEMED> (4,702,056)
<SHARES-REINVESTED> 1,501,670
<NET-CHANGE-IN-ASSETS> 1,832,366,408
<ACCUMULATED-NII-PRIOR> 15,363,543
<ACCUMULATED-GAINS-PRIOR> 97,653,721
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 15,175,880
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 36,518,008
<AVERAGE-NET-ASSETS> 284,247,334
<PER-SHARE-NAV-BEGIN> 15.85
<PER-SHARE-NII> .64
<PER-SHARE-GAIN-APPREC> 4.11
<PER-SHARE-DIVIDEND> (.71)
<PER-SHARE-DISTRIBUTIONS> (.91)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 18.98
<EXPENSE-RATIO> .81
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
