<PAGE>
000 A000000 12/30/97
000 C000000 0000311635
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 U
001 A000000 LORD ABBETT US GOV'T SEC. MONEY MARKET FUND
001 B000000 811-2924
001 C000000 2128481870
002 A000000 767 FIFTH AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10153
002 D020000 0101
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 LORD, ABBETT & CO.
008 B000001 A
008 C000001 801-6997
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10153
008 D040001 0101
011 A000001 LORD ABBETT DISTRIBUTOR LLC
011 B000001 8-216
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10153
011 C040001 0101
012 A000001 DST SYSTEMS, INC.
012 B000001 84-448
012 C010001 KANSAS CITY
012 C020001 MO
012 C030001 64141
<PAGE>
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10048
015 A000001 UNITED MISSOURI BANK OF KANSAS CITY, N.A
015 B000001 C
015 C010001 KANSAS CITY
015 C020001 MO
015 C030001 64141
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 33
019 C000000 LORDABBETT
020 C000001 0
020 C000002 0
020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 0
022 A000001 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
022 B000001 13-5674085
022 C000001 624874
022 D000001 591028
022 A000002 DEAN WITTER REYNOLDS, INC.
022 B000002 94-1671384
022 C000002 457061
022 D000002 469287
022 A000003 FUJI SECURITIES INC.
022 B000003 13-2726611
022 C000003 170927
022 D000003 120463
022 A000004 BANK OF AMERICA NT & SA
022 B000004 94-1687665
022 C000004 63391
022 D000004 132437
022 A000005 UTENDAHL CAPITAL PARTNERS, LP
022 B000005 13-3648596
022 C000005 81558
022 D000005 86558
022 A000006 EVEREN SECURITIES, INC.
022 B000006 34-1542819
022 C000006 54805
022 D000006 54793
022 A000007 MORGAN STANLEY & CO.,INC.
022 B000007 13-2655998
<PAGE>
022 C000007 45471
022 D000007 45471
022 A000008 UNITED MISSOURI BANKS OF KANSAS CITY
022 B000008 43-1357092
022 C000008 11300
022 D000008 11300
022 C000009 0
022 D000009 0
022 C000010 0
022 D000010 0
023 C000000 1815087
023 D000000 1818037
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 N
026 B000000 N
026 C000000 N
026 D000000 N
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
027 000000 Y
028 A010000 20975
028 A020000 526
028 A030000 0
028 A040000 23226
028 B010000 23956
028 B020000 500
028 B030000 0
028 B040000 17314
028 C010000 21795
028 C020000 548
028 C030000 0
028 C040000 32382
028 D010000 41890
028 D020000 521
028 D030000 0
028 D040000 31536
028 E010000 20985
028 E020000 512
028 E030000 0
028 E040000 27177
028 F010000 29927
<PAGE>
028 F020000 546
028 F030000 0
028 F040000 30991
028 G010000 159528
028 G020000 3153
028 G030000 0
028 G040000 162626
028 H000000 0
029 000000 N
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
034 000000 N
035 000000 0
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 0
042 D000000 100
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.000
048 A010000 250000
048 A020000 0.500
048 B010000 250000
048 B020000 0.450
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
<PAGE>
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 500000
048 K020000 0.400
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 Y
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 Y
054 M000000 N
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 250
062 A000000 Y
062 B000000 0.0
062 C000000 100.0
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
<PAGE>
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 33
063 B000000 0.0
064 A000000 N
064 B000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 Y
070 B010000 N
070 B020000 N
070 C010000 N
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 N
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 N
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 N
070 J020000 N
070 K010000 N
070 K020000 N
070 L010000 N
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 N
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 0
<PAGE>
071 B000000 0
071 C000000 0
071 D000000 0
072 A000000 6
072 B000000 4067
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 367
072 G000000 0
072 H000000 0
072 I000000 173
072 J000000 0
072 K000000 0
072 L000000 15
072 M000000 2
072 N000000 36
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 15
072 S000000 3
072 T000000 2
072 U000000 0
072 V000000 0
072 W000000 6
072 X000000 619
072 Y000000 0
072 Z000000 3448
072AA000000 0
072BB000000 0
072CC010000 0
072CC020000 0
072DD010000 3448
072DD020000 0
072EE000000 0
073 A010000 0.0240
073 A020000 0.0200
073 B000000 0.0000
073 C000000 0.0000
074 A000000 165
074 B000000 0
074 C000000 145258
074 D000000 0
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
<PAGE>
074 L000000 0
074 M000000 231
074 N000000 145654
074 O000000 0
074 P000000 0
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 1397
074 S000000 0
074 T000000 144257
074 U010000 141687
074 U020000 836
074 V010000 1.00
074 V020000 1.00
074 W000000 1.0003
074 X000000 11210
074 Y000000 0
075 A000000 145723
075 B000000 0
076 000000 0.00
077 A000000 N
078 000000 N
080 C000000 0
081 B000000 0
082 B000000 0
083 B000000 0
084 B000000 0
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 JOSEPH VAN DYKE
TITLE ASSISTANT TREASURER
INDEPENDENT AUDITORS' REPORT
To the Board of Directors,
Lord Abbett U.S. Government Securities Fund, Inc.:
In planning and performing our audit of the financial statements of Lord Abbett
U.S. Government Securities Fund Money Market Fund, Inc. (the "Fund") for the
year ended June 30, 1998 (on which we have issued our report dated July 31,
1998), we considered its internal control, including control activities for
safeguarding securities, in order to determine our auditing procedures for the
purpose of expressing our opinion on the financial statements and to comply with
the requirements of Form N-SAR, and not to provide assurance on the Fund's
internal control.
The management of the Fund is responsible for establishing and maintaining
internal control. In fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and related costs of
controls. Generally, controls that are relevant to an audit pertain to the
entity's objective of preparing financial statements for external purposes that
are fairly presented in conformity with generally accepted accounting
principles. Those controls include the safeguarding of assets against
unauthorized acquisition, use, or disposition.
Because of inherent limitations in any internal control, errors or fraud may
occur and not be detected. Also, projection of any evaluation of internal
control to future periods is subject to the risk that it may become inadequate
because of changes in conditions or that the effectiveness of the design and
operation may deteriorate.
Our consideration of the Fund's internal control would not necessarily disclose
all matters in internal control that might be material weaknesses under
standards established by the American Institute of Certified Public Accountants.
A material weakness is a condition in which the design or operation of one or
more of the internal control components does not reduce to a relatively low
level the risk that errors or fraud in amounts that would be material in
relation to the financial statements being audited may occur and not be detected
within a timely period by employees in the normal course of performing their
assigned functions. However, we noted no matters involving the Fund's internal
control and its operation, including controls for safeguarding securities, that
we consider to be material weaknesses as defined above as of June 30, 1998.
This report is intended solely for the information and use of management, the
Board of Directors of Lord Abbett U.S. Government Securities Money Market Fund,
Inc. and the Securities and Exchange Commission.
July 31, 1998
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000311635
<NAME> US GOVERNMENT SECURITIES MONEY MARKET FUND, INC.
[NUMBER] 001
[NAME] CLASS A
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> JUN-30-1998
<PERIOD-START> JUL-01-1997
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 164992400
<INVESTMENTS-AT-VALUE> 164992400
<RECEIVABLES> 351886
<ASSETS-OTHER> 3718
<OTHER-ITEMS-ASSETS> 216399
<TOTAL-ASSETS> 165560685
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 432207
<TOTAL-LIABILITIES> 432207
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 162630556
<SHARES-COMMON-PRIOR> 143197339
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 165128478
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 8051245
<OTHER-INCOME> 0
<EXPENSES-NET> 1216931
<NET-INVESTMENT-INCOME> 6834314
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 6924897
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 6834314
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 328880426
<NUMBER-OF-SHARES-REDEEMED> 315776844
<SHARES-REINVESTED> 6329635
<NET-CHANGE-IN-ASSETS> 20896343
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 730404
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1216931
<AVERAGE-NET-ASSETS> 146080887
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .047
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> .047
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .83
<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
<CIK> 0000311635
<NAME> US GOVERNMENT SECURITIES MONEY MARKET FUND, INC.
[NUMBER] 002
[NAME] CLASS B
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> JUN-30-1998
<PERIOD-START> JUL-01-1997
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 164992400
<INVESTMENTS-AT-VALUE> 164992400
<RECEIVABLES> 351886
<ASSETS-OTHER> 3718
<OTHER-ITEMS-ASSETS> 216399
<TOTAL-ASSETS> 165560685
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 432207
<TOTAL-LIABILITIES> 432207
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 1760371
<SHARES-COMMON-PRIOR> 243676
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 165128478
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 57022
<OTHER-INCOME> 0
<EXPENSES-NET> 16305
<NET-INVESTMENT-INCOME> 40717
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 6924897
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 3416002
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7463526
<NUMBER-OF-SHARES-REDEEMED> 5975020
<SHARES-REINVESTED> 28189
<NET-CHANGE-IN-ASSETS> 20896343
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5143
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 16305
<AVERAGE-NET-ASSETS> 1028541
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .039
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> .039
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 1.59
<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
<CIK> 0000311635
<NAME> US GOVERNMENT SECURITIES MONEY MARKET FUND, INC.
[NUMBER] 003
[NAME] CLASS C
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> JUN-30-1998
<PERIOD-START> JUL-01-1997
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 164992400
<INVESTMENTS-AT-VALUE> 164992400
<RECEIVABLES> 351886
<ASSETS-OTHER> 3718
<OTHER-ITEMS-ASSETS> 216399
<TOTAL-ASSETS> 165560685
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 432207
<TOTAL-LIABILITIES> 432207
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 737551
<SHARES-COMMON-PRIOR> 791120
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 165128478
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 58691
<OTHER-INCOME> 0
<EXPENSES-NET> 8824
<NET-INVESTMENT-INCOME> 49867
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 6924897
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 3416002
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5938698
<NUMBER-OF-SHARES-REDEEMED> 6024269
<SHARES-REINVESTED> 32002
<NET-CHANGE-IN-ASSETS> 20896343
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5267
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 8824
<AVERAGE-NET-ASSETS> 1053399
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .047
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> .047
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .84
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
