<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 2940 52673 SH OTHER 01 51623 1050
D Abbott Laboratories COM 002824100 9725 214320 SH OTHER 01 200040 14280
D Air Products & Chemicals Inc. COM 009158106 2380 59141 SH OTHER 01 57541 1600
D Albertson's Inc. COM 013104104 981 19029 SH OTHER 01 18729 300
D Alcoa COM 022249106 283 4578 SH OTHER 01 4578
D Allied Irish Banks ADR COM 019228402 342 12558 SH OTHER 01 12558
D Alltel Corp. COM 020039103 228 3185 SH OTHER 01 3185
D American Home Products Corp. COM 026609107 6055 105539 SH OTHER 01 100139 5400
D American Intl. Group COM 026874107 12902 110042 SH OTHER 01 101473 8569
D Ameritech Corp. COM 030954101 2366 32196 SH OTHER 01 31596 600
D Amgen Inc. COM 031162100 1067 17524 SH OTHER 01 16244 1280
D Anheuser-Busch Companies Inc. COM 035229103 277 3900 SH OTHER 01 3900
D Atlantic Richfield Company COM 048825103 633 7580 SH OTHER 01 6780 800
D Automatic Data Processing Inc. COM 053015103 4442 100960 SH OTHER 01 92060 8900
D BP Amoco PLC ADR COM 055622104 5495 50642 SH OTHER 01 46809 3833
D Banc One Corp Del COM 06423A103 2128 35731 SH OTHER 01 35731
D Bank of America Corp. COM 06605F102 754 10281 SH OTHER 01 10281
D Bank of New York Company Inc. COM 064057102 550 15000 SH OTHER 01 15000
D Bell Atlantic Corp. COM 077853109 4967 75978 SH OTHER 01 69978 6000
D BellSouth Corp. COM 079860102 2995 64935 SH OTHER 01 61935 3000
D Berkshire Hathaway Cl B COM 084670207 500 223 SH OTHER 01 223
D Best Foods Corp. COM 08658U101 763 15420 SH OTHER 01 10820 4600
D Boeing Company COM 097023105 424 9632 SH OTHER 01 9632
D Bristol Myers Squibb Co. COM 110122108 9247 131282 SH OTHER 01 125082 6200
D Cambridge Technologies COM 132524109 18260 1039740 SH OTHER 01 949090 90650
D Cardinal Health Inc. COM 14149y108 339 5283 SH OTHER 01 4783 500
D Caterpillar Inc. COM 149123101 264 4400 SH OTHER 01 400 4000
D Chase Manhattan Corp. COM 16161A108 2039 23574 SH OTHER 01 21674 1900
D Chevron Corp. COM 166751107 1305 13726 SH OTHER 01 13726
D Chromavision Medical Systems I COM 17111P104 2068 209395 SH OTHER 01 112220 97175
D Chubb Corp. COM 171232101 635 9133 SH OTHER 01 7533 1600
D Cigna Corp. COM 125509109 1247 14015 SH OTHER 01 14015
D Cintas Corp. COM 172908105 429 6385 SH OTHER 01 6185 200
D Cisco Systems Inc. COM 17275R102 30630 475342 SH OTHER 01 447878 27464
D Citigroup Inc COM 172967101 2175 45792 SH OTHER 01 43892 1900
D Clorox Company COM 189054109 2104 19700 SH OTHER 01 18200 1500
D Coca Cola Company COM 191216100 7251 116957 SH OTHER 01 112332 4625
D Colgate-Palmolive Company COM 194162103 1001 10161 SH OTHER 01 10161
D Compucom Systems Inc. COM 204780100 220 53300 SH OTHER 01 53300
D Core Technologies Inc. COM 218911105 1 15566 SH OTHER 01 15566
D Dell Computer Corp. COM 247025109 1085 29320 SH OTHER 01 28520 800
D Diamond Tech. Partners Cl A COM 252762109 2541 113544 SH OTHER 01 54315 59229
D Disney (Walt) Company COM 254687106 2439 79154 SH OTHER 01 73979 5175
D Docucorp International Inc. COM 255911109 913 221225 SH OTHER 01 123590 97635
D Dover Corp. COM 260003108 846 24165 SH OTHER 01 20065 4100
D Dow Chemical Company COM 260543103 449 3541 SH OTHER 01 2841 700
D Duke Power Company COM 264399106 318 5846 SH OTHER 01 5474 372
D Dupont (E.I.) De Nemours & Com COM 263534109 8249 120751 SH OTHER 01 103501 17250
D EMC Corp. COM 268648102 2294 41706 SH OTHER 01 40656 1050
D Eastman Kodak Company COM 277461109 228 3368 SH OTHER 01 3068 300
D Electronic Arts Inc. COM 285512109 954 17580 SH OTHER 01 15580 2000
D Eli Lilly and Company COM 532457108 2402 33530 SH OTHER 01 28530 5000
D Emerson Electric Company COM 291011104 2752 43725 SH OTHER 01 41595 2130
D Ericsson L. M. Tel Co ADR Cl B COM 294821400 711 21600 SH OTHER 01 8800 12800
D Exxon Corporation COM 30231G102 9875 128043 SH OTHER 01 122579 5464
D FPL Group Inc. COM 302571104 236 4319 SH OTHER 01 4319
D Federal Natl Mtg Assn COM 313586109 5344 78296 SH OTHER 01 74296 4000
D Fedl Home Loan Mtg. Corp. COM 313400301 896 15440 SH OTHER 01 14940 500
D Finance Co PA COM 317369106 342 340 SH OTHER 01 340
D First Consulting Group Com COM 31986R103 129 12171 SH OTHER 01 9500 2671
D First Data Corp. COM 319963104 556 11352 SH OTHER 01 7152 4200
D First Security Corp. COM 336294103 1891 69405 SH OTHER 01 19380 50025
D First Union Corp. COM 337358105 9028 191570 SH OTHER 01 183282 8288
D Fulton Financial Corp. COM 360271100 903 43632 SH OTHER 01 43632
D GAP Inc. COM 364760108 434 8612 SH OTHER 01 7412 1200
D GTE Corp. COM 362320103 1873 24807 SH OTHER 01 23537 1270
D Gannett Company Inc. COM 364730101 794 11125 SH OTHER 01 10125 1000
D General Electric Co. COM 369604103 30465 269599 SH OTHER 01 248409 21190
D General Motors Corp. COM 370442105 304 4603 SH OTHER 01 4603
D Gillette Company COM 375766102 4354 106200 SH OTHER 01 102450 3750
D H. J. Heinz Company COM 423074103 2502 49918 SH OTHER 01 47231 2687
D Healthsouth Corp. COM 421924101 1951 131155 SH OTHER 01 126355 4800
D Hershey Foods Corp. COM 427866108 1118 18830 SH OTHER 01 17130 1700
D Hewlett-Packard Company COM 428236103 9050 90052 SH OTHER 01 84602 5450
D Home Depot Inc. COM 437076102 12471 193542 SH OTHER 01 182144 11398
D IBM Corp. COM 459200101 8114 62780 SH OTHER 01 54392 8388
D Illinois Tool Works COM 452308109 6826 83495 SH OTHER 01 78895 4600
D Intel Corp. COM 458140100 11316 190192 SH OTHER 01 183852 6340
D Johnson & Johnson COM 478160104 15623 159419 SH OTHER 01 147062 12357
D Justi Group Inc COM 999999999 2492 15775 SH OTHER 01 15775
D Kimberly Clark Corp. COM 494368103 1435 25175 SH OTHER 01 23575 1600
D Kohls Corp. COM 500255104 3167 41200 SH OTHER 01 39900 1300
D Lauder Estee Cosmetics Inc. COM 518439104 436 8700 SH OTHER 01 6700 2000
D Lucent Technologies Inc. COM 549463107 9866 146300 SH OTHER 01 133303 12997
D MBNA Corp. COM 55262L100 433 14140 SH OTHER 01 13640 500
D MCI Worldcom Inc COM 55268B106 1788 20780 SH OTHER 01 19380 1400
D Marsh & McLennan Companies Inc COM 571748102 337 4454 SH OTHER 01 4454
D May Department Stores Company COM 577778103 878 21485 SH OTHER 01 19835 1650
D McDonalds Corp. COM 580135101 1766 42950 SH OTHER 01 37950 5000
D Medtronic Inc. COM 585055106 528 6785 SH OTHER 01 5785 1000
D Mellon Bank Corp. COM 585509102 1490 40964 SH OTHER 01 36564 4400
D Mercantile Bancorp COM 587342106 311 5448 SH OTHER 01 5448
D Merck & Company Inc. COM 589331107 20940 284408 SH OTHER 01 265274 19134
D Microsoft Corp. COM 594918104 24847 275502 SH OTHER 01 261612 13890
D Minnesota Mng & Mfg Co. COM 604059105 1782 20499 SH OTHER 01 17612 2887
D Mobil Corp. COM 607059102 5351 54187 SH OTHER 01 53087 1100
D Monsanto Company COM 611662107 218 5500 SH OTHER 01 5500
D Morgan J.P. & Co. COM 616880100 1901 13528 SH OTHER 01 9728 3800
D Motorola Inc. COM 620076109 572 6040 SH OTHER 01 2040 4000
D Network Associates Inc. COM 640938106 528 35944 SH OTHER 01 30832 5112
D Neuromedical Systems Inc. COM 64124H109 0 10000 SH OTHER 01 10000
D Newell Rubbermaid Company COM 651229106 1564 33715 SH OTHER 01 30515 3200
D Nokia Corp. COM 654902204 324 3535 SH OTHER 01 2985 550
D Norsk Hydro ADR COM 656531605 1094 28600 SH OTHER 01 3300 25300
D Northern Tr Corp Com COM 665859104 383 3950 SH OTHER 01 3350 600
D OAO Technologies Inc. COM 67082B105 836 223005 SH OTHER 01 117810 105195
D Oracle Corp. COM 68389X105 7148 192532 SH OTHER 01 182896 9636
D PNC Bank Corp. COM 693475105 2207 38303 SH OTHER 01 36903 1400
D PPG Industries Inc. COM 693506107 1539 26058 SH OTHER 01 24090 1968
D Paychex Inc. COM 704326107 7214 226324 SH OTHER 01 216586 9738
D Penn Treaty American Corp. COM 707874103 9496 394621 SH OTHER 01 98155 296466
D Pepsico Inc. COM 713448108 4962 128259 SH OTHER 01 109059 19200
D Pfizer Inc. COM 717081103 6798 62368 SH OTHER 01 60168 2200
D Philadelphia Suburban Corp. COM 718009608 424 18397 SH OTHER 01 17397 1000
D Philip Morris Cos. Inc. COM 718154107 756 18810 SH OTHER 01 18810
D Price T. Rowe Assoc. Inc. COM 741477103 3286 85632 SH OTHER 01 74412 11220
D Procter & Gamble Co. COM 742718109 11990 134339 SH OTHER 01 128639 5700
D RCN Corp. COM 749361101 399 9576 SH OTHER 01 9576
D Raytheon Co. Cl B COM 755111408 352 5000 SH OTHER 01 5000
D Royal Dutch Petroleum Company COM 780257804 2584 42894 SH OTHER 01 41894 1000
D SBC Communications Corp. COM 845333103 3913 67460 SH OTHER 01 64760 2700
D Safeco Corp. COM 786429100 485 11000 SH OTHER 01 3600 7400
D Safeguard Scientifics Inc. COM 786449108 75385 1196584 SH OTHER 01 692030 504554
D Sanchez Computer Assoc. COM 799702105 4802 138676 SH OTHER 01 41456 97220
D Sara Lee Inc. COM 803111103 902 39740 SH OTHER 01 36540 3200
D Schering-Plough Corp. COM 806605101 2417 46043 SH OTHER 01 45043 1000
D Schlumberger Ltd. COM 806857108 831 13052 SH OTHER 01 12100 952
D Schwab (Charles) Corp. COM 808513105 3647 33455 SH OTHER 01 32805 650
D ServiceMaster Company COM 81760N109 1239 66063 SH OTHER 01 61326 4737
D Sigma Aldrich Corp. COM 826552101 215 6250 SH OTHER 01 6250
D SmithKline Beecham Holding ADR COM 832378301 1033 15637 SH OTHER 01 10637 5000
D SouthTrust Corp. COM 844730101 1086 28300 SH OTHER 01 27700 600
D Southwest Airlines Company COM 844741108 261 8387 SH OTHER 01 8387
D Sovereign Bancorp Inc. COM 845905108 1002 82642 SH OTHER 01 51922 30720
D Sprint Corp. COM 852061100 1901 35870 SH OTHER 01 31350 4520
D Staples Inc. COM 855030102 4713 152324 SH OTHER 01 142974 9350
D Starbucks Corp. COM 855244109 1306 34760 SH OTHER 01 33010 1750
D State Street Corp. COM 857477103 3432 40200 SH OTHER 01 36500 3700
D Stryker Corp. COM 863667101 3408 56690 SH OTHER 01 53490 3200
D Student Advantage Inc. COM 86386q105 97 10250 SH OTHER 01 10250
D Summit Bancorp COM 866005101 1341 32065 SH OTHER 01 27990 4075
D Sun Microsystems Inc. COM 866810104 346 5018 SH OTHER 01 4418 600
D SunTrust Banks Inc. COM 867914103 906 13041 SH OTHER 01 5201 7840
D Telecomonicacoe Brasil ADR COM 879287308 308 3425 SH OTHER 01 525 2900
D Teleflex Inc. COM 879369106 2544 58569 SH OTHER 01 54069 4500
D Tellabs Inc Com COM 879664100 52568 778068 SH OTHER 01 694980 83088
D Texaco Inc. COM 881694103 335 5368 SH OTHER 01 5368
D Thermo Electron Corp. COM 883556102 843 42020 SH OTHER 01 12970 29050
D Thoratec Labs Corporation COM 885175307 223 21000 SH OTHER 01 21000
D US Bancorp COM 902973106 242 7260 SH OTHER 01 7260
D US Data Corp. COM 917294100 369 95100 SH OTHER 01 54800 40300
D US West Inc New Com COM 91273H101 218 3707 SH OTHER 01 3707
D United Technologies Corp. COM 913017109 502 6972 SH OTHER 01 6272 700
D Unumprovident Corp COM 903192102 1377 25147 SH OTHER 01 25147
D Vodafone Airtouch ADR COM 92857t107 1444 7330 SH OTHER 01 7030 300
D Wachovia Corp. COM 929771103 1800 21032 SH OTHER 01 18432 2600
D Wal-Mart Stores COM 931142103 8151 168941 SH OTHER 01 163777 5164
D Walgreen Company COM 931422109 576 19600 SH OTHER 01 19600
D Warner-Lambert Co. COM 934488107 2511 36320 SH OTHER 01 35420 900
D Wells Fargo & Co. New COM 949746101 4055 94862 SH OTHER 01 87762 7100
D Wrigley Jr. (Wm.) Co. COM 982526105 2262 25361 SH OTHER 01 23461 1900
D Xerox Corp. COM 984121103 219 3700 SH OTHER 01 3100 600
D Delaware Group Decatur Fund 245907100 243 12862.3710SH OTHER 01 12862.3710
D Vanguard Growth & Income Fund 921913109 426 12239.9360SH OTHER 01 12239.9360
D Vanguard Index Trust 500 922908108 413 3257.8980SH OTHER 01 3257.8980
D Vanguard US Growth 921910105 495 12365.0770SH OTHER 01 12365.0770
D Vanguard/Windsor Fd Com 922018106 219 12057.6390SH OTHER 01 12057.6390
D Saranac Software 12/31/00 120002605 80 20000 SH OTHER 01 20000
S REPORT SUMMARY 168 DATA RECORDS 646501 1 OTHER MANAGERS ON WHOSE BEHALF REPORT IS FILED
</TABLE>
