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
Estimated average burden
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
ACCENTURE PLC IRELAND SHS CLASS A G1151C101 408 1,900 SH   SOLE   0 0 1,900
WHITE MTNS INS GROUP LTD COM G9618E107 2,519 2,837 SH   SOLE   0 0 2,837
ATLAS CORP SHS Y0436Q109 2,865 377,000 SH   SOLE   0 0 377,000
ALLEGHANY CORP DEL COM 017175100 2,231 4,561 SH   SOLE   0 0 4,561
ALPHABET INC CAP STK CL C 02079K107 10,653 7,536 SH   SOLE   0 0 7,536
ALPHABET INC CAP STK CL A 02079K305 567 400 SH   SOLE   0 0 400
AMAZON COM INC COM 023135106 342 124 SH   SOLE   0 0 124
AMERICAN EXPRESS CO COM 025816109 816 8,567 SH   SOLE   0 0 8,567
APPLE INC COM 037833100 19,601 53,731 SH   SOLE   0 0 53,731
BK OF AMERICA CORP COM 060505104 2,680 112,851 SH   SOLE   0 0 112,851
BERKSHIRE HATHAWAY INC DEL CL A 084670108 6,148 23 SH   SOLE   0 0 23
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,053 101,132 SH   SOLE   0 0 101,132
BLACKSTONE MTG TR INC COM CL A 09257W100 204 8,481 SH   SOLE   0 0 8,481
BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 4,214 128,099 SH   SOLE   0 0 128,099
BUILDERS FIRSTSOURCE INC COM 12008R107 1,039 50,200 SH   SOLE   0 0 50,200
CANADIAN NATL RY CO COM 136375102 890 10,050 SH   SOLE   0 0 10,050
CARMAX INC COM 143130102 448 5,000 SH   SOLE   0 0 5,000
CASEYS GEN STORES INC COM 147528103 477 3,190 SH   SOLE   0 0 3,190
CIMAREX ENERGY CO COM 171798101 298 10,850 SH   SOLE   0 0 10,850
COSTCO WHSL CORP NEW COM 22160K105 3,569 11,770 SH   SOLE   0 0 11,770
DISNEY WALT CO COM DISNEY 254687106 3,286 29,469 SH   SOLE   0 0 29,469
EASTERLY GOVT PPTYS INC COM 27616P103 231 10,000 SH   SOLE   0 0 10,000
FACEBOOK INC CL A 30303M102 358 1,575 SH   SOLE   0 0 1,575
GABELLI EQUITY TR INC COM 362397101 1,028 204,291 SH   SOLE   0 0 204,291
HOWARD HUGHES CORP COM 44267D107 554 10,660 SH   SOLE   0 0 10,660
INDEPENDENT BANK CORP MASS COM 453836108 301 4,488 SH   SOLE   0 0 4,488
INTERCONTINENTAL EXCHANGE IN COM 45866F104 403 4,400 SH   SOLE   0 0 4,400
ISHARES TR 1 3 YR TREAS BD 464287457 98 1,127 SH   SOLE   0 0 1,127
ISHARES TR SHORT TREAS BD 464288679 110 995 SH   SOLE   0 0 995
JOHNSON & JOHNSON COM 478160104 4,010 28,517 SH   SOLE   0 0 28,517
LIBERTY MEDIA CORP DEL COM A SIRIUSXM 531229409 5,035 145,859 SH   SOLE   0 0 145,859
LIBERTY MEDIA CORP DEL COM C SIRIUSXM 531229607 16 468 SH   SOLE   0 0 468
LIBERTY MEDIA CORP DEL COM A BRAVES GRP 531229706 2 122 SH   SOLE   0 0 122
LIBERTY MEDIA CORP DEL COM SER C FRMLA 531229854 4 115 SH   SOLE   0 0 115
LIBERTY MEDIA CORP DEL COM SER A FRMLA 531229870 2,438 83,557 SH   SOLE   0 0 83,557
LIBERTY MEDIA CORP DEL COM C BRAVES GRP 531229888 15 745 SH   SOLE   0 0 745
LOWES COS INC COM 548661107 3,814 28,225 SH   SOLE   0 0 28,225
MARKEL CORP COM 570535104 347 376 SH   SOLE   0 0 376
MASTERCARD INCORPORATED CL A 57636Q104 5,567 18,825 SH   SOLE   0 0 18,825
MICROSOFT CORP COM 594918104 2,958 14,535 SH   SOLE   0 0 14,535
MONDELEZ INTL INC CL A 609207105 248 4,860 SH   SOLE   0 0 4,860
MONMOUTH REAL ESTATE INVT CO CL A 609720107 214 14,750 SH   SOLE   0 0 14,750
NVIDIA CORPORATION COM 67066G104 443 1,165 SH   SOLE   0 0 1,165
OCCIDENTAL PETE CORP COM 674599105 548 29,961 SH   SOLE   0 0 29,961
PEPSICO INC COM 713448108 608 4,600 SH   SOLE   0 0 4,600
QURATE RETAIL INC COM SER A 74915M100 436 45,925 SH   SOLE   0 0 45,925
RENN FD INC COM 759720105 109 86,065 SH   SOLE   0 0 86,065
RESTAURANT BRANDS INTL INC COM 76131D103 2,365 43,300 SH   SOLE   0 0 43,300
ROYCE MICRO-CAP TR INC COM 780915104 233 32,430 SH   SOLE   0 0 32,430
SCHLUMBERGER LTD COM 806857108 359 19,500 SH   SOLE   0 0 19,500
SHOPIFY INC CL A 82509L107 237 250 SH   SOLE   0 0 250
SOURCE CAP INC COM 836144105 2,515 76,028 SH   SOLE   0 0 76,028
STORE CAP CORP COM 862121100 469 19,700 SH   SOLE   0 0 19,700
TEXAS PAC LD TR SUB CTF PROP I T 882610108 3,540 5,953 SH   SOLE   0 0 5,953
TIDEWATER INC NEW COM 88642R109 47 8,428 SH   SOLE   0 0 8,428
TIDEWATER INC NEW *W EXP 07/31/202 88642R117 13 23,066 SH   SOLE   0 0 23,066
TIDEWATER INC NEW *W EXP 07/31/202 88642R125 8 19,530 SH   SOLE   0 0 19,530
UNILEVER PLC SPON ADR NEW 904767704 329 6,000 SH   SOLE   0 0 6,000
UNION PAC CORP COM 907818108 1,620 9,582 SH   SOLE   0 0 9,582
VERISK ANALYTICS INC COM 92345Y106 1,108 6,510 SH   SOLE   0 0 6,510
WELLS FARGO CO NEW COM 949746101 2,624 102,487 SH   SOLE   0 0 102,487
WYNDHAM HOTELS & RESORTS INC COM 98311A105 990 23,225 SH   SOLE   0 0 23,225