<TABLE>
FORM 13F INFORMATION TABLE
VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE
- ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C> <C> <C>
AT&T Corp. COM 001957109 2725 62636 SH OTHER 01 61586 1050
Abbott Laboratories COM 002824100 8392 228754 SH OTHER 01 214474 14280
Air Products & Chemicals Inc. COM 009158106 1585 54177 SH OTHER 01 52577 1600
Albertson's Inc. COM 013104104 532 13441 SH OTHER 01 13141 300
Alcoa COM 022249106 359 5778 SH OTHER 01 5778
Allied Irish Banks ADR COM 019228402 319 12558 SH OTHER 01 12558
Alltel Corp. COM 020039103 271 3849 SH OTHER 01 3849
American Home Products Corp. COM 026609107 4406 106161 SH OTHER 01 100761 5400
American Intl. Group COM 026874107 13025 149826 SH OTHER 01 139718 10108
Ameritech Corp. COM 030954101 2333 34952 SH OTHER 01 34352 600
Amgen Inc. COM 031162100 1503 18439 SH OTHER 01 17759 680
Anheuser-Busch Companies Inc. COM 035229103 273 3900 SH OTHER 01 3900
Atlantic Richfield Company COM 048825103 867 9780 SH OTHER 01 8980 800
Automatic Data Processing Inc. COM 053015103 4832 108276 SH OTHER 01 99376 8900
BP Amoco PLC ADR COM 055622104 5821 52528 SH OTHER 01 48695 3833
Banc One Corp Del COM 06423A103 968 27803 SH OTHER 01 27803
Bank of America Corp. COM 06605F102 661 11871 SH OTHER 01 11871
Bank of New York Company Inc. COM 064057102 502 15000 SH OTHER 01 15000
Bell Atlantic Corp. COM 077853109 5520 82001 SH OTHER 01 76001 6000
BellSouth Corp. COM 079860102 3045 67663 SH OTHER 01 64663 3000
Berkshire Hathaway Cl B COM 084670207 425 229 SH OTHER 01 229
Best Foods Corp. COM 08658U101 755 15538 SH OTHER 01 10938 4600
Boeing Company COM 097023105 423 9930 SH OTHER 01 9930
Bristol Myers Squibb Co. COM 110122108 10248 151827 SH OTHER 01 145627 6200
Cambridge Technologies COM 132524109 15035 1036870 SH OTHER 01 946570 90300
Cardinal Health Inc. COM 14149y108 341 6253 SH OTHER 01 5753 500
Caterpillar Inc. COM 149123101 241 4400 SH OTHER 01 400 4000
Chase Manhattan Corp. COM 16161A108 1822 24174 SH OTHER 01 22274 1900
Chevron Corp. COM 166751107 1243 14010 SH OTHER 01 14010
Chromavision Medical Systems I COM 17111P104 2741 219245 SH OTHER 01 122070 97175
Chubb Corp. COM 171232101 513 10333 SH OTHER 01 8733 1600
Cigna Corp. COM 125509109 1284 16517 SH OTHER 01 16517
Cintas Corp. COM 172908105 699 12090 SH OTHER 01 11890 200
Cisco Systems Inc. COM 17275R102 33940 495025 SH OTHER 01 467561 27464
Citigroup Inc COM 172967101 2226 50602 SH OTHER 01 48702 1900
Clorox Company COM 189054109 2168 56670 SH OTHER 01 53670 3000
Coca Cola Company COM 191216100 5623 116530 SH OTHER 01 111405 5125
Colgate-Palmolive Company COM 194162103 1008 22022 SH OTHER 01 22022
Compucom Systems Inc. COM 204780100 224 59860 SH OTHER 01 59860
Core Technologies Inc. COM 218911105 1 15566 SH OTHER 01 15566
Dell Computer Corp. COM 247025109 1295 30960 SH OTHER 01 30160 800
Diamond Tech. Partners Cl A COM 252762109 5354 119304 SH OTHER 01 60075 59229
Disney (Walt) Company COM 254687106 2039 78404 SH OTHER 01 73229 5175
Docucorp International Inc. COM 255911109 1498 235045 SH OTHER 01 137410 97635
Dover Corp. COM 260003108 372 9098 SH OTHER 01 7098 2000
Dow Chemical Company COM 260543103 375 3301 SH OTHER 01 2601 700
Duke Power Company COM 264399106 311 5646 SH OTHER 01 5274 372
Dupont (E.I.) De Nemours & Com COM 263534109 8496 140433 SH OTHER 01 124015 16418
EMC Corp. COM 268648102 3157 44231 SH OTHER 01 42781 1450
Eastman Kodak Company COM 277461109 243 3218 SH OTHER 01 2918 300
Electronic Arts Inc. COM 285512109 1272 17580 SH OTHER 01 15580 2000
Eli Lilly and Company COM 532457108 2619 40808 SH OTHER 01 35808 5000
Emerson Electric Company COM 291011104 2931 46383 SH OTHER 01 44253 2130
Enron Corp. COM 293561106 201 4906 SH OTHER 01 4306 600
Ericsson L. M. Tel Co ADR Cl B COM 294821400 706 22600 SH OTHER 01 9800 12800
Exxon Corporation COM 30231G102 11763 154770 SH OTHER 01 149306 5464
Federal Natl Mtg Assn COM 313586109 5198 82914 SH OTHER 01 78914 4000
Fedl Home Loan Mtg. Corp. COM 313400301 830 15965 SH OTHER 01 15465 500
Finance Co PA COM 317369106 342 340 SH OTHER 01 340
First Consulting Group Com COM 31986R103 162 16176 SH OTHER 01 13505 2671
First Data Corp. COM 319963104 489 11142 SH OTHER 01 6942 4200
First Security Corp. COM 336294103 1651 69405 SH OTHER 01 19380 50025
First Union Corp. COM 337358105 6589 184950 SH OTHER 01 176677 8273
Firstar Corp. COM 33763V109 292 11392 SH OTHER 01 11392
Fleet Financial Group COM 338915101 259 7062 SH OTHER 01 7062
Fulton Financial Corp. COM 360271100 818 43632 SH OTHER 01 43632
GAP Inc. COM 364760108 336 10492 SH OTHER 01 8792 1700
GTE Corp. COM 362320103 1999 26007 SH OTHER 01 24737 1270
Gannett Company Inc. COM 364730101 802 11598 SH OTHER 01 10598 1000
General Electric Co. COM 369604103 33668 283971 SH OTHER 01 262881 21090
General Motors Corp. COM 370442105 327 5191 SH OTHER 01 5191
Gillette Company COM 375766102 3865 113890 SH OTHER 01 110140 3750
H. J. Heinz Company COM 423074103 2187 50858 SH OTHER 01 48171 2687
Healthsouth Corp. COM 421924101 793 129475 SH OTHER 01 126275 3200
Hershey Foods Corp. COM 427866108 815 16746 SH OTHER 01 15446 1300
Hewlett-Packard Company COM 428236103 8672 95560 SH OTHER 01 90110 5450
Home Depot Inc. COM 437076102 13643 198802 SH OTHER 01 187404 11398
IBM Corp. COM 459200101 9065 74919 SH OTHER 01 66531 8388
Illinois Tool Works COM 452308109 6851 91878 SH OTHER 01 87278 4600
Intel Corp. COM 458140100 14478 194822 SH OTHER 01 188482 6340
Internet Capital Group Inc. COM 46059C106 10532 119849 SH OTHER 01 70414 49435
Interpublic Group COM 460690100 302 7350 SH OTHER 01 6950 400
Johnson & Johnson COM 478160104 15546 169203 SH OTHER 01 156846 12357
Justi Group Inc COM 999999999 2492 15775 SH OTHER 01 15775
Kimberly Clark Corp. COM 494368103 1515 28717 SH OTHER 01 27117 1600
Kohls Corp. COM 500255104 2860 43255 SH OTHER 01 41955 1300
Lauder Estee Cosmetics Inc. COM 518439104 400 10230 SH OTHER 01 8230 2000
Lincoln Electric Hldgs. COM 533900106 815 39050 SH OTHER 01 39050
Lucent Technologies Inc. COM 549463107 10556 162718 SH OTHER 01 149722 12996
MBNA Corp. COM 55262L100 390 17090 SH OTHER 01 16590 500
MCI Worldcom Inc COM 55268B106 2120 29495 SH OTHER 01 27895 1600
Marsh & McLennan Companies Inc COM 571748102 421 6149 SH OTHER 01 6149
May Department Stores Company COM 577778103 624 17135 SH OTHER 01 15935 1200
McDonalds Corp. COM 580135101 2109 48773 SH OTHER 01 43773 5000
Medtronic Inc. COM 585055106 602 16940 SH OTHER 01 14340 2600
Mellon Bank Corp. COM 585509102 1684 50076 SH OTHER 01 45676 4400
Merck & Company Inc. COM 589331107 19512 301058 SH OTHER 01 281924 19134
Microsoft Corp. COM 594918104 26517 292802 SH OTHER 01 278912 13890
Minnesota Mng & Mfg Co. COM 604059105 2046 21299 SH OTHER 01 18412 2887
Mobil Corp. COM 607059102 5873 58290 SH OTHER 01 57190 1100
Monsanto Company COM 611662107 202 5647 SH OTHER 01 5647
Morgan J.P. & Co. COM 616880100 1637 14328 SH OTHER 01 10528 3800
Motorola Inc. COM 620076109 532 6040 SH OTHER 01 2040 4000
Network Associates Inc. COM 640938106 547 28604 SH OTHER 01 23492 5112
Neuromedical Systems Inc. COM 64124H109 1 10000 SH OTHER 01 10000
Newell Rubbermaid Company COM 651229106 672 23513 SH OTHER 01 21513 2000
Nokia Corp. COM 654902204 417 4635 SH OTHER 01 4085 550
Norsk Hydro ADR COM 656531605 1213 28200 SH OTHER 01 2900 25300
Northern Tr Corp Com COM 665859104 466 5575 SH OTHER 01 4975 600
OAO Technologies Inc. COM 67082B105 727 237355 SH OTHER 01 132160 105195
Oracle Corp. COM 68389X105 9409 206794 SH OTHER 01 197158 9636
PNC Bank Corp. COM 693475105 2084 39555 SH OTHER 01 38155 1400
PPG Industries Inc. COM 693506107 1513 25215 SH OTHER 01 23247 1968
Paychex Inc. COM 704326107 8398 246082 SH OTHER 01 236344 9738
Penn Treaty American Corp. COM 707874103 8254 395421 SH OTHER 01 100655 294766
Pepsico Inc. COM 713448108 4097 134335 SH OTHER 01 115135 19200
Pfizer Inc. COM 717081103 7530 209894 SH OTHER 01 202794 7100
Philadelphia Suburban Corp. COM 718009608 511 21697 SH OTHER 01 20697 1000
Philip Morris Cos. Inc. COM 718154107 499 14600 SH OTHER 01 14600
Price T. Rowe Assoc. Inc. COM 741477103 2441 88957 SH OTHER 01 78157 10800
Procter & Gamble Co. COM 742718109 13270 141546 SH OTHER 01 135945 5601
RCN Corp. COM 749361101 393 9576 SH OTHER 01 9576
Raytheon Co. Cl B COM 755111408 248 5000 SH OTHER 01 5000
Rohm & Haas Co. COM 775371107 635 17589 SH OTHER 01 17589
Royal Dutch Petroleum Company COM 780257804 2573 43556 SH OTHER 01 42556 1000
SBC Communications Corp. COM 78387G103 3652 71520 SH OTHER 01 68820 2700
Safeco Corp. COM 786429100 308 11000 SH OTHER 01 3600 7400
Safeguard Scientifics Inc. COM 786449108 85472 1256934 SH OTHER 01 761030 495904
Sanchez Computer Assoc. COM 799702105 5278 150276 SH OTHER 01 53056 97220
Sara Lee Inc. COM 803111103 1018 43540 SH OTHER 01 40340 3200
Schering-Plough Corp. COM 806605101 2102 48193 SH OTHER 01 47193 1000
Schlumberger Ltd. COM 806857108 920 14770 SH OTHER 01 13818 952
Schwab (Charles) Corp. COM 808513105 2499 74730 SH OTHER 01 71280 3450
ServiceMaster Company COM 81760N109 1019 63420 SH OTHER 01 58683 4737
SmithKline Beecham Holding ADR COM 832378301 1070 18567 SH OTHER 01 13567 5000
SouthTrust Corp. COM 844730101 1013 28250 SH OTHER 01 27650 600
Southwest Airlines Company COM 844741108 196 12880 SH OTHER 01 12880
Sovereign Bancorp Inc. COM 845905108 721 79282 SH OTHER 01 48562 30720
Sprint Corp. COM 852061100 2075 38245 SH OTHER 01 33725 4520
Staples Inc. COM 855030102 3700 169647 SH OTHER 01 160297 9350
Starbucks Corp. COM 855244109 1067 43050 SH OTHER 01 41200 1850
State Street Corp. COM 857477103 2809 43466 SH OTHER 01 39766 3700
Stryker Corp. COM 863667101 3067 59990 SH OTHER 01 56790 3200
Student Advantage Inc. COM 86386q105 118 10250 SH OTHER 01 10250
Summit Bancorp COM 866005101 996 30716 SH OTHER 01 28791 1925
Sun Microsystems Inc. COM 866810104 522 5618 SH OTHER 01 5018 600
SunTrust Banks Inc. COM 867914103 802 12201 SH OTHER 01 4361 7840
Telecomonicacoe Brasil ADR COM 879287308 254 3425 SH OTHER 01 525 2900
Teleflex Inc. COM 879369106 2558 64869 SH OTHER 01 59869 5000
Tellabs Inc Com COM 879664100 43886 770768 SH OTHER 01 687680 83088
Texaco Inc. COM 881694103 345 5468 SH OTHER 01 5468
Thermo Electron Corp. COM 883556102 562 41820 SH OTHER 01 12770 29050
Thoratec Labs Corporation COM 885175307 160 21000 SH OTHER 01 21000
Tyco Intl Ltd COM 902124106 1249 12099 SH OTHER 01 11149 950
US Bancorp COM 902973106 219 7260 SH OTHER 01 7260
US Data Corp. COM 917294100 360 99336 SH OTHER 01 59036 40300
US Interactive Inc. COM 90334M109 1354 61356 SH OTHER 01 35638 25718
US West Inc New Com COM 91273H101 261 4567 SH OTHER 01 4567
United Technologies Corp. COM 913017109 603 10172 SH OTHER 01 9172 1000
UnumProvident Corp COM 903192102 552 18747 SH OTHER 01 18747
Vodafone Airtouch ADR COM 92857t107 1803 7584 SH OTHER 01 7284 300
Wachovia Corp. COM 929771103 1751 22265 SH OTHER 01 19665 2600
Wal-Mart Stores COM 931142103 8770 184396 SH OTHER 01 179232 5164
Walgreen Company COM 931422109 573 22570 SH OTHER 01 22570
Warner-Lambert Co. COM 934488107 2336 35190 SH OTHER 01 34290 900
Wells Fargo & Co. New COM 949746101 3845 97028 SH OTHER 01 89928 7100
Wrigley Jr. (Wm.) Co. COM 982526105 1847 26839 SH OTHER 01 24939 1900
Merrill Lynch Basic Fd. Cl. A 263 6853.0140SH OTHER 6853.0140
Vanguard Growth & Income Fund 921913109 405 12239.9360SH OTHER 01 12239.9360
Vanguard Index Trust 500 922908108 354 2987.6340SH OTHER 01 2987.6340
Vanguard US Growth 921910105 434 11379.4300SH OTHER 01 11379.4300
Vanguard/Windsor Fd Com 922018106 196 12057.6390SH OTHER 01 12057.6390
Saranac Software 12/31/00 120002605 80 20000 SH OTHER 01 20000
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