<TABLE>
VALUE SHARES/ SH/ PUT/ INVSTMT -----VOTING AUTHORITY-----
NAME OF ISSUER -TITLE OF CLASS- --CUSIP-- (x$1000) PRN AMT PRN CALL DSCRETN -MANAGERS- SOLE SHARED NONE
<C> <C>
D AT&T Corp. COM 001957109 2472 30968 SH OTHER 01 30268 700
D Abbott Laboratories COM 002824100 10016 213970 SH OTHER 01 199690 14280
D Air Products & Chemicals Inc. COM 009158106 2163 63141 SH OTHER 01 61541 1600
D Airtouch Communications Inc. COM 00949T100 1417 14660 SH OTHER 01 14060 600
D Albertson's Inc. COM 013104104 1308 24029 SH OTHER 01 23729 300
D Allied Irish Banks ADR COM 019228402 520 5026 SH OTHER 01 5026
D American Home Products Corp. COM 026609107 6704 102746 SH OTHER 01 97346 5400
D American Intl. Group COM 026874107 12975 107562 SH OTHER 01 99493 8069
D Ameritech Corp. COM 030954101 1538 26696 SH OTHER 01 26096 600
D Amgen Inc. COM 031162100 1218 16270 SH OTHER 01 14990 1280
D Anheuser-Busch Companies Inc. COM 035229103 297 3900 SH OTHER 01 3900
D Ascend Communications Inc. COM 043491109 403 4815 SH OTHER 01 3800 1015
D Atlantic Richfield Company COM 048825103 529 7228 SH OTHER 01 6428 800
D Automatic Data Processing Inc. COM 053015103 4102 99130 SH OTHER 01 90230 8900
D BP Amoco PLC ADR COM 055622104 4993 49434 SH OTHER 01 45601 3833
D Banc One Corp Del COM 06423A103 1993 36191 SH OTHER 01 36191
D Bank of New York Company Inc. COM 064057102 539 15000 SH OTHER 01 15000
D BankAmerica Corp. COM 06605F102 516 7306 SH OTHER 01 7306
D Bell Atlantic Corp. COM 077853109 3759 72728 SH OTHER 01 66728 6000
D BellSouth Corp. COM 079860102 3013 75215 SH OTHER 01 72815 2400
D Berkshire Hathaway Cl B COM 084670207 315 134 SH OTHER 01 134
D Best Foods Corp. COM 08658U101 776 16520 SH OTHER 01 11920 4600
D Boeing Company COM 097023105 262 7700 SH OTHER 01 7700
D Bristol Myers Squibb Co. COM 110122108 7977 124402 SH OTHER 01 118202 6200
D Cambridge Technologies COM 132524109 14310 1031370 SH OTHER 01 939020 92350
D Chase Manhattan Corp. COM 16161A108 1971 24224 SH OTHER 01 22324 1900
D Chevron Corp. COM 166751107 1422 16026 SH OTHER 01 16026
D Chromavision Medical Systems I COM 17111P104 1341 210395 SH OTHER 01 113220 97175
D Chubb Corp. COM 171232101 535 9133 SH OTHER 01 7533 1600
D Cigna Corp. COM 125509109 1175 14015 SH OTHER 01 14015
D Cisco Systems Inc. COM 17275R102 26220 239315 SH OTHER 01 225346 13969
D Citigroup Inc COM 172967101 1516 23730 SH OTHER 01 22730 1000
D Clorox Company COM 189054109 1863 15900 SH OTHER 01 14700 1200
D Coca Cola Company COM 191216100 7853 127957 SH OTHER 01 123132 4825
D Colgate-Palmolive Company COM 194162103 1288 14000 SH OTHER 01 14000
D Comerica Inc. COM 200340104 322 5163 SH OTHER 01 5163
D Compaq Computer COM 204493100 201 6334 SH OTHER 01 5834 500
D Compucom Systems Inc. COM 204780100 157 53300 SH OTHER 01 53300
D Core Technologies Inc. COM 218911105 1 15566 SH OTHER 01 15566
D Dell Computer Corp. COM 247025109 851 20830 SH OTHER 01 20030 800
D Diamond Tech. Partners Cl A COM 252762109 2644 114664 SH OTHER 01 55435 59229
D Disney (Walt) Company COM 254687106 2646 84998 SH OTHER 01 80423 4575
D Docucorp International Inc. COM 255911109 1176 223945 SH OTHER 01 126070 97875
D Dover Corp. COM 260003108 982 29865 SH OTHER 01 24865 5000
D Dow Chemical Company COM 260543103 274 2941 SH OTHER 01 2241 700
D Duke Power Company COM 264399106 397 7246 SH OTHER 01 6874 372
D Dupont (E.I.) De Nemours & Com COM 263534109 6785 116849 SH OTHER 01 97849 19000
D EMC Corp. COM 268648102 1364 10678 SH OTHER 01 10153 525
D Electronic Arts Inc. COM 285512109 1150 24205 SH OTHER 01 22205 2000
D Eli Lilly and Company COM 532457108 2506 29530 SH OTHER 01 25530 4000
D Emerson Electric Company COM 291011104 2415 45627 SH OTHER 01 43497 2130
D Ericsson L. M. Tel Co ADR Cl B COM 294821400 740 31080 SH OTHER 01 9280 21800
D Estee Lauder Cosmetics Inc. COM 518439104 411 4350 SH OTHER 01 3350 1000
D Exxon Corp. COM 302290101 9018 127800 SH OTHER 01 122336 5464
D FPL Group Inc. COM 302571104 230 4319 SH OTHER 01 4319
D Federal Natl Mtg Assn COM 313586109 4879 70451 SH OTHER 01 66451 4000
D Fedl Home Loan Mtg. Corp. COM 313400301 648 11300 SH OTHER 01 10800 500
D Finance Co PA COM 317369106 323 340 SH OTHER 01 340
D First Consulting Group Com COM 31986R103 141 12681 SH OTHER 01 10010 2671
D First Data Corp. COM 319963104 485 11352 SH OTHER 01 7152 4200
D First Security Corp. COM 336294103 1118 57905 SH OTHER 01 17880 40025
D First Union Corp. COM 337358105 9643 180447 SH OTHER 01 172174 8273
D Fleet Financial Group COM 338915101 447 11892 SH OTHER 01 11292 600
D Fulton Financial Corp. COM 360271100 868 37838 SH OTHER 01 37838
D GTE Corp. COM 362320103 1003 16572 SH OTHER 01 15302 1270
D Gannett Company Inc. COM 364730101 695 11025 SH OTHER 01 10025 1000
D General Electric Co. COM 369604103 29594 267520 SH OTHER 01 246330 21190
D General Motors Corp. COM 370442105 378 4340 SH OTHER 01 4340
D Gillette Company COM 375766102 6377 107290 SH OTHER 01 102940 4350
D H. J. Heinz Company COM 423074103 2456 51843 SH OTHER 01 49156 2687
D Healthsouth Corp. COM 421924101 1364 131495 SH OTHER 01 124095 7400
D Hershey Foods Corp. COM 427866108 1229 21930 SH OTHER 01 19330 2600
D Hewlett-Packard Company COM 428236103 6204 91492 SH OTHER 01 86042 5450
D Home Depot Inc. COM 437076102 12291 197445 SH OTHER 01 186047 11398
D Illinois Tool Works COM 452308109 4772 77125 SH OTHER 01 72525 4600
D Intel Corp. COM 458140100 10572 88931 SH OTHER 01 85761 3170
D International Business Machine COM 459200101 5251 29626 SH OTHER 01 26432 3194
D Johnson & Johnson COM 478160104 14763 157898 SH OTHER 01 145541 12357
D Justi Group Inc COM 999999999 2492 15775 SH OTHER 01 15775
D Kimberly Clark Corp. COM 494368103 1240 25875 SH OTHER 01 24275 1600
D Kohls Corp. COM 500255104 2807 39610 SH OTHER 01 38310 1300
D Lucent Technologies Inc. COM 549463107 7681 71119 SH OTHER 01 65458 5661
D MBNA Corp. COM 55262L100 241 10115 SH OTHER 01 10115
D MCI Worldcom Inc COM 55268B106 237 2673 SH OTHER 01 2273 400
D Marsh & McLennan Companies Inc COM 571748102 301 4054 SH OTHER 01 4054
D May Department Stores Company COM 577778103 951 24299 SH OTHER 01 22649 1650
D McDonalds Corp. COM 580135101 1986 43840 SH OTHER 01 38840 5000
D Mellon Bank Corp. COM 585509102 1638 23280 SH OTHER 01 21180 2100
D Mercantile Bancorp COM 587342106 259 5448 SH OTHER 01 5448
D Merck & Company Inc. COM 589331107 21597 269542 SH OTHER 01 250408 19134
D Microsoft Corp. COM 594918104 24974 278648 SH OTHER 01 264758 13890
D Minnesota Mng & Mfg Co. COM 604059105 1539 21759 SH OTHER 01 18872 2887
D Mobil Corp. COM 607059102 4881 55467 SH OTHER 01 54067 1400
D Monsanto Company COM 611662107 262 5700 SH OTHER 01 5700
D Morgan J.P. & Co. COM 616880100 1706 13828 SH OTHER 01 9828 4000
D Motorola Inc. COM 620076109 439 6000 SH OTHER 01 2000 4000
D Network Associates Inc. COM 640938106 1203 39204 SH OTHER 01 38892 312
D Neuromedical Systems Inc. COM 64124H109 1 10000 SH OTHER 01 10000
D Newell Rubbermaid Company COM 651229106 1753 36915 SH OTHER 01 33715 3200
D Norsk Hydro ADR COM 656531605 1175 29100 SH OTHER 01 3800 25300
D Northern Tr Corp Com COM 665859104 253 2850 SH OTHER 01 2450 400
D OAO Technologies Inc. COM 67082B105 752 231265 SH OTHER 01 119810 111455
D Oracle Corp. COM 68389X105 4924 186702 SH OTHER 01 177066 9636
D PNC Bank Corp. COM 693475105 2773 49903 SH OTHER 01 48503 1400
D PPG Industries Inc. COM 693506107 1491 29083 SH OTHER 01 26615 2468
D Paychex Inc. COM 704326107 7109 149852 SH OTHER 01 143860 5992
D Penn Treaty American Corp. COM 707874103 9889 398531 SH OTHER 01 96495 302036
D Pepsico Inc. COM 713448108 5174 132025 SH OTHER 01 112825 19200
D Pfizer Inc. COM 717081103 7778 56058 SH OTHER 01 53858 2200
D Philadelphia Suburban Corp. COM 718009608 395 17397 SH OTHER 01 16397 1000
D Philip Morris Cos. Inc. COM 718154107 676 19220 SH OTHER 01 19220
D Price T. Rowe Assoc. Inc. COM 741477103 2677 77882 SH OTHER 01 66262 11620
D Procter & Gamble Co. COM 742718109 13211 134894 SH OTHER 01 129194 5700
D Raytheon Co. Cl B COM 755111408 346 5900 SH OTHER 01 5900
D Royal Dutch Petroleum Company COM 780257804 2598 49961 SH OTHER 01 48361 1600
D SBC Communications Corp. COM 845333103 3108 65860 SH OTHER 01 63160 2700
D Safeco Corp. COM 786429100 445 11000 SH OTHER 01 3600 7400
D Safeguard Scientifics Inc. COM 786449108 85261 1263119 SH OTHER 01 715765 547354
D Sanchez Computer Assoc. COM 799702105 1618 69588 SH OTHER 01 20728 48860
D Sara Lee Inc. COM 803111103 1177 47540 SH OTHER 01 41740 5800
D Schering-Plough Corp. COM 806605101 2458 44493 SH OTHER 01 43493 1000
D Schlumberger Ltd. COM 806857108 792 13152 SH OTHER 01 12200 952
D Schwab (Charles) Corp. COM 808513105 3037 31590 SH OTHER 01 31040 550
D ServiceMaster Company COM 81760N109 1388 68313 SH OTHER 01 63576 4737
D SmithKline Beecham Holding ADR COM 832378301 1212 16945 SH OTHER 01 10945 6000
D SouthTrust Corp. COM 844730101 1118 29952 SH OTHER 01 29352 600
D Southwest Airlines Company COM 844741108 269 8887 SH OTHER 01 8887
D Sovereign Bancorp Inc. COM 845905108 918 74958 SH OTHER 01 52798 22160
D Sprint Corp. COM 852061100 1291 13155 SH OTHER 01 10895 2260
D Staples Inc. COM 855030102 4619 140507 SH OTHER 01 131657 8850
D Starbucks Corp. COM 855244109 858 30560 SH OTHER 01 28810 1750
D State Street Corp. COM 857477103 2881 35025 SH OTHER 01 31825 3200
D Stryker Corp. COM 863667101 2902 57540 SH OTHER 01 54340 3200
D Summit Bancorp COM 866005101 1395 35762 SH OTHER 01 31437 4325
D Sun Microsystems Inc. COM 866810104 306 2450 SH OTHER 01 2150 300
D SunTrust Banks Inc. COM 867914103 812 13041 SH OTHER 01 5201 7840
D Telecomonicacoe Brasil ADR COM 879287308 266 3300 SH OTHER 01 400 2900
D Teleflex Inc. COM 879369106 1951 57269 SH OTHER 01 52769 4500
D Tellabs Inc Com COM 879664100 38643 395320 SH OTHER 01 353776 41544
D Texaco Inc. COM 881694103 293 5168 SH OTHER 01 5168
D Thermo Electron Corp. COM 883556102 615 45320 SH OTHER 01 16270 29050
D Thoratec Labs Corporation COM 885175307 155 21000 SH OTHER 01 21000
D US Bancorp COM 902973106 247 7260 SH OTHER 01 7260
D US Data Corp. COM 917294100 294 98100 SH OTHER 01 57800 40300
D US West Inc New Com COM 91273H101 247 4494 SH OTHER 01 4494
D United Technologies Corp. COM 913017109 384 2836 SH OTHER 01 2636 200
D Unum Corp. COM 903192102 1208 25397 SH OTHER 01 25397
D Wachovia Corp. COM 929771103 1732 21332 SH OTHER 01 18732 2600
D Wal-Mart Stores COM 931142103 7255 78702 SH OTHER 01 76120 2582
D Walgreen Company COM 931422109 488 17290 SH OTHER 01 17290
D Warner-Lambert Co. COM 934488107 2195 33130 SH OTHER 01 32230 900
D Wells Fargo & Co. New COM 949746101 3512 100162 SH OTHER 01 93062 7100
D Wrigley Jr. (Wm.) Co. COM 982526105 2317 25621 SH OTHER 01 23421 2200
D Xerox Corp. COM 984121103 453 8700 SH OTHER 01 8100 600
D Vanguard Growth & Income Fund 921913109 413 12831.6700SH OTHER 01 12831.6700
D Vanguard Index Trust 500 922908108 440 3698.6430SH OTHER 01 3698.6430
D Vanguard US Growth 921910105 507 13027.6580SH OTHER 01 13027.6580
D Saranac Software 12/31/00 120002605 80 20000 SH OTHER 01 20000
S REPORT SUMMARY 158 DATA RECORDS 600038 1 OTHER MANAGERS ON WHOSE BEHALF REPORT IS FILED
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