The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
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hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
3m Company COM 604059105 4,415 25,257 SH   SOLE   0 0 0
AT&T COM 001957109 4,747 165,067 SH   SOLE   0 0 0
AbbVie Inc COM 00287Y109 846 7,892 SH   SOLE   0 0 0
Abbott Labs COM 002824100 406 3,712 SH   SOLE   0 0 0
Air Prods & Chems COM 009158106 2,035 7,448 SH   SOLE   0 0 0
Allstate COM 020002101 374 3,400 SH   SOLE   0 0 0
Alphabet A (Google New) COM 38259P508 10,323 5,890 SH   SOLE   0 0 0
Alphabet C Non-voting (Google) COM 38259P706 16,804 9,592 SH   SOLE   0 0 0
Altria Group COM 718154107 329 8,018 SH   SOLE   0 0 0
Amazon COM 023135106 2,508 770 SH   SOLE   0 0 0
American Express COM 025816109 8,452 69,901 SH   SOLE   0 0 0
Amgen Inc COM 031162100 665 2,893 SH   SOLE   0 0 0
Apple Computer COM 037833100 6,042 45,532 SH   SOLE   0 0 0
Automatic Data Proc. COM 053015103 15,045 85,388 SH   SOLE   0 0 0
Autozone Inc COM 053332102 213 180 SH   SOLE   0 0 0
Bank Of America COM 060505104 2,932 96,742 SH   SOLE   0 0 0
Bank Of NY Mellon COM 064057102 2,498 58,860 SH   SOLE   0 0 0
Bausch Health Companie F COM 071734107 221 10,625 SH   SOLE   0 0 0
Berkshire Hathaway COM 084670991 3,826 11 SH   SOLE   0 0 0
Berkshire Hathaway B COM 084670207 36,520 157,502 SH   SOLE   0 0 0
Biogen Idec Inc COM 09062X103 1,432 5,850 SH   SOLE   0 0 0
Boeing COM 097023105 404 1,887 SH   SOLE   0 0 0
Bristol-Myers Squibb COM 110122108 2,994 48,260 SH   SOLE   0 0 0
CSX COM 126408103 532 5,865 SH   SOLE   0 0 0
Canadian Nat. Railway COM 136375102 1,225 11,150 SH   SOLE   0 0 0
Carrier Global COM 14448C104 239 6,328 SH   SOLE   0 0 0
Caterpillar Inc COM 149123101 210 1,155 SH   SOLE   0 0 0
Charter Communications COM 16119P108 2,245 3,393 SH   SOLE   0 0 0
Check Pt Software Tech COM M22465104 377 2,840 SH   SOLE   0 0 0
Chevron COM 166764100 1,992 23,584 SH   SOLE   0 0 0
Chubb LTD F COM H1467J104 459 2,981 SH   SOLE   0 0 0
Church & Dwight COM 171340102 962 11,030 SH   SOLE   0 0 0
Cintas COM 172908105 440 1,244 SH   SOLE   0 0 0
Cisco Systems Inc COM 17275R102 417 9,327 SH   SOLE   0 0 0
Citigroup Inc COM 172967101 558 9,045 SH   SOLE   0 0 0
Clorox Company COM 189054109 204 1,008 SH   SOLE   0 0 0
Coca-Cola COM 191216100 4,699 85,682 SH   SOLE   0 0 0
Colgate Palmolive COM 194162103 2,797 32,706 SH   SOLE   0 0 0
Comcast A COM 20030N101 17,361 331,315 SH   SOLE   0 0 0
Conocophillips COM 20825C104 246 6,162 SH   SOLE   0 0 0
Corteva Inc COM 22052L104 253 6,537 SH   SOLE   0 0 0
Costco Wholesale COM 22160K105 1,908 5,063 SH   SOLE   0 0 0
Deere And Co COM 244199105 646 2,400 SH   SOLE   0 0 0
Diageo (Guinness) COM 25243q205 1,332 8,385 SH   SOLE   0 0 0
Discovery Holding A COM 25470F104 12,546 416,945 SH   SOLE   0 0 0
Disney COM 254687106 14,462 79,821 SH   SOLE   0 0 0
Dow Chemical COM 260543103 347 6,253 SH   SOLE   0 0 0
Eaton Corp COM 278058102 1,471 12,248 SH   SOLE   0 0 0
Ecolab Inc COM 278865100 649 3,000 SH   SOLE   0 0 0
Edwards Lifesciences COM 28176E108 8,844 96,945 SH   SOLE   0 0 0
Emerson Electric COM 291011104 460 5,720 SH   SOLE   0 0 0
Expeditors Int'l Of Wa COM 302130109 1,562 16,420 SH   SOLE   0 0 0
Exxon Mobil COM 302290101 3,727 90,419 SH   SOLE   0 0 0
Facebook COM 30303M102 6,288 23,018 SH   SOLE   0 0 0
Fedex COM 31428X106 4,038 15,552 SH   SOLE   0 0 0
Fiserv Inc Com COM 337738108 2,385 20,945 SH   SOLE   0 0 0
Gazprom PJSC Fadr ADR COM 368287207 286 51,000 SH   SOLE   0 0 0
General Electric COM 369604103 301 27,898 SH   SOLE   0 0 0
General Mills COM 370334104 229 3,900 SH   SOLE   0 0 0
Goldman Sachs COM 38141G104 4,709 17,855 SH   SOLE   0 0 0
Home Depot COM 437076102 6,690 25,186 SH   SOLE   0 0 0
Honeywell Int'l COM 438516106 5,874 27,615 SH   SOLE   0 0 0
Humana Inc Com COM 444859102 256 623 SH   SOLE   0 0 0
Idexx Labs COM 45168D104 940 1,880 SH   SOLE   0 0 0
Illumina Inc COM 452327109 622 1,680 SH   SOLE   0 0 0
Immunogen Inc COM 45253H101 563 87,300 SH   SOLE   0 0 0
Intel COM 458140100 10,102 202,771 SH   SOLE   0 0 0
Intuit Inc COM 461202103 27,920 73,504 SH   SOLE   0 0 0
J.P. Morgan Chase COM 616880100 12,899 101,508 SH   SOLE   0 0 0
Jaguar Health Inc COM 47010C409 16 20,000 SH   SOLE   0 0 0
Johnson & Johnson COM 478160104 7,823 49,709 SH   SOLE   0 0 0
Kimberly Clark COM 494368103 636 4,715 SH   SOLE   0 0 0
Kinder Morgan Inc. COM 49456B101 1,506 110,201 SH   SOLE   0 0 0
L3 Harris Technologies Inc COM 502431109 989 5,230 SH   SOLE   0 0 0
Liberty Media Corp Del Com A S COM 531229409 1,044 24,175 SH   SOLE   0 0 0
Liberty Media Corp Del Com C S COM 531229607 387 8,900 SH   SOLE   0 0 0
Lilly (eli) COM 532457108 389 2,305 SH   SOLE   0 0 0
Lockheed Martin COM 539830109 2,916 8,216 SH   SOLE   0 0 0
Lowes COM 548661107 278 1,733 SH   SOLE   0 0 0
Markel Corp Holding Co COM 905399101 358 346 SH   SOLE   0 0 0
Marriott Intl New A COM 571903202 1,605 12,163 SH   SOLE   0 0 0
Mastercard Inc COM 57636q104 11,644 32,623 SH   SOLE   0 0 0
McDonalds COM 580135101 4,318 20,122 SH   SOLE   0 0 0
Medtronic PLC F COM 585055106 1,004 8,569 SH   SOLE   0 0 0
Merck COM 589331107 1,596 19,509 SH   SOLE   0 0 0
Microsoft COM 594918104 40,349 181,407 SH   SOLE   0 0 0
Moody's Corp COM 615369105 275 949 SH   SOLE   0 0 0
Morgan Stanley COM 617446448 2,995 43,710 SH   SOLE   0 0 0
Nike Inc Class B COM 654106103 779 5,507 SH   SOLE   0 0 0
Norfolk Southern COM 655844108 4,692 19,746 SH   SOLE   0 0 0
Otis Worldwide COM 913017109 223 3,307 SH   SOLE   0 0 0
PayPal COM 98419Q101 285 1,218 SH   SOLE   0 0 0
Paychex COM 704326107 9,709 104,196 SH   SOLE   0 0 0
Pepsico Inc. COM 713448108 2,928 19,743 SH   SOLE   0 0 0
Pfizer COM 717081103 830 22,547 SH   SOLE   0 0 0
Philip Morris Int'l COM 02209S103 389 4,693 SH   SOLE   0 0 0
Phillips 66 COM 718546104 1,641 23,465 SH   SOLE   0 0 0
Procter & Gamble COM 742718109 7,437 53,449 SH   SOLE   0 0 0
Qualcomm COM 747525103 18,568 121,887 SH   SOLE   0 0 0
Raytheon Technologies COM 75513E101 3,995 55,871 SH   SOLE   0 0 0
Scotts Miracle Grow COM 810186106 262 1,315 SH   SOLE   0 0 0
Sherwin Williams COM 824348106 9,208 12,529 SH   SOLE   0 0 0
Shopify Inc COM 82509L107 272 240 SH   SOLE   0 0 0
Snap On Inc Com COM 833034101 208 1,215 SH   SOLE   0 0 0
Starbucks Coffee COM 855244109 387 3,619 SH   SOLE   0 0 0
Stryker COM 863667101 1,228 5,012 SH   SOLE   0 0 0
Sysco COM 871829107 3,104 41,803 SH   SOLE   0 0 0
TC Energy Corporation COM 89353D107 4,600 112,955 SH   SOLE   0 0 0
Texas Instruments COM 882508104 7,388 45,014 SH   SOLE   0 0 0
Thermo Fisher Scientific COM 883556102 15,778 33,875 SH   SOLE   0 0 0
TriNet Group Inc COM 896288107 1,714 21,265 SH   SOLE   0 0 0
Union Pacific COM 907818108 21,495 103,232 SH   SOLE   0 0 0
United Healthcare COM 910581107 502 1,432 SH   SOLE   0 0 0
United Parcel Service COM 911312106 6,634 39,394 SH   SOLE   0 0 0
Veeva Systems Inc A COM 922475108 544 2,000 SH   SOLE   0 0 0
Verizon Comm. COM 92343V104 1,670 28,429 SH   SOLE   0 0 0
Vertex Pharmaceuticals COM 92532F100 752 3,183 SH   SOLE   0 0 0
Visa COM 92826C839 25,226 115,330 SH   SOLE   0 0 0
Walgreens Boots Alliance COM 931422109 245 6,137 SH   SOLE   0 0 0
Wells Fargo & Co. COM 949746101 3,807 126,137 SH   SOLE   0 0 0