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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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
AT&T Inc COM 00206r102 321 9,997 SH   SOLE   0 0 9,997
Abbott Labs Com COM 002824100 260 4,271 SH   SOLE   0 0 4,271
Abbvie Inc. Com COM 00287y109 428 4,624 SH   SOLE   0 0 4,624
Alerus Finl Corp Com COM 01446u103 526 20,100 SH   SOLE   0 0 20,100
Alleghany Corp COM 017175100 9,446 16,428 SH   SOLE   0 0 16,428
Allstate Corp COM 020002101 206 2,259 SH   SOLE   0 0 2,259
Alphabet Inc COM 02079K107 321 288 SH   SOLE   0 0 288
Altria Group Inc. COM 02209s103 224 3,944 SH   SOLE   0 0 3,944
Amazon Com Inc Com COM 023135106 360 212 SH   SOLE   0 0 212
Apergy Corp Com COM 03755l104 774 18,546 SH   SOLE   0 0 18,546
Apple Inc COM 037833100 911 4,922 SH   SOLE   0 0 4,922
Avalonbay Comm Reit Inc. COM 053484101 232 1,350 SH   SOLE   0 0 1,350
BB&T Corp COM 054937107 292 5,796 SH   SOLE   0 0 5,796
Bank Of Amer Corp COM 060505104 1,997 70,848 SH   SOLE   0 0 70,848
Becton Dickinson & Co Com COM 758871099 3,406 14,219 SH   SOLE   0 0 14,219
Berkshire Hathaway Inc-Cl A COM 846701084 846 3 SH   SOLE   0 0 3
Berkshire Hathaway Inc-Cl B COM 084670702 25,860 138,549 SH   SOLE   0 0 138,549
Boston Properties COM 101121101 301 2,400 SH   SOLE   0 0 2,400
Cable One Inc Com COM 12685j105 2,384 3,251 SH   SOLE   0 0 3,251
Coca-Cola Corp COM 191216100 3,981 90,770 SH   SOLE   0 0 90,770
Colfax Corp Com COM 194014106 5,922 193,210 SH   SOLE   0 0 193,210
Corning Inc Com COM 219350105 5,157 187,459 SH   SOLE   0 0 187,459
Costco Wholesale Corp COM 22160k105 413 1,976 SH   SOLE   0 0 1,976
Delta Air Lines Del Com New COM 247361702 643 12,975 SH   SOLE   0 0 12,975
Diageo Plc Spon Adr New COM 25243q205 2,181 15,148 SH   SOLE   0 0 15,148
Diamond Offshore Drill Com COM 25271c102 1,558 74,679 SH   SOLE   0 0 74,679
Discovery Holdings Co Cl A COM 25470f104 8,482 308,445 SH   SOLE   0 0 308,445
Dover Corp Com COM 260003108 2,717 37,123 SH   SOLE   0 0 37,123
Dover Motorsports Inc COM 260174107 263 116,855 SH   SOLE   0 0 116,855
Exxon Mobil Corp COM 30231g102 7,269 87,867 SH   SOLE   0 0 87,867
Facebook Inc Cl A COM 30303M102 891 4,583 SH   SOLE   0 0 4,583
Fairfax Finl Hldgs Ltd Sub Vtg COM 303901102 941 1,678 SH   SOLE   0 0 1,678
Federal Realty Invt Tr Sbi-New COM 313747206 316 2,500 SH   SOLE   0 0 2,500
Fedex Corp Com COM 31428X106 207 910 SH   SOLE   0 0 910
First Natl Bk Alaska Com COM 32212j106 470 214 SH   SOLE   0 0 214
General Electric Corp COM 369604103 244 17,897 SH   SOLE   0 0 17,897
Genuine Parts Co Com COM 372460105 4,785 52,130 SH   SOLE   0 0 52,130
Glaxo Holdings Plc COM 37733w105 1,162 28,815 SH   SOLE   0 0 28,815
Graham Holdings Co COM 384637104 1,582 2,700 SH   SOLE   0 0 2,700
Hasbro Inc Com COM 418056107 6,158 66,713 SH   SOLE   0 0 66,713
Honeywell Intl Inc COM 438516106 313 2,172 SH   SOLE   0 0 2,172
IShares Tr MSCI Eafe Idx COM 464287465 259 3,865 SH   SOLE   0 0 3,865
Intel Corp COM 458140100 1,490 29,974 SH   SOLE   0 0 29,974
International Business Machine COM 459200101 6,748 48,305 SH   SOLE   0 0 48,305
J P Morgan Chase And Co COM 46625h100 1,268 12,168 SH   SOLE   0 0 12,168
Jefferies Grp Inc New Com COM 47233w109 8,395 369,167 SH   SOLE   0 0 369,167
Johnson & Johnson COM 478160104 10,626 87,576 SH   SOLE   0 0 87,576
Johnson Ctls International Plc COM G51502105 4,406 131,731 SH   SOLE   0 0 131,731
Liberty Media Corp Del Com Ser COM 531229854 316 8,520 SH   SOLE   0 0 8,520
Loews Corp COM 540424108 7,945 164,570 SH   SOLE   0 0 164,570
Madison Square Garden Cl A COM 55825t103 11,483 37,018 SH   SOLE   0 0 37,018
Markel Corp Com COM 570535104 23,086 21,290 SH   SOLE   0 0 21,290
Marsh & McLennan Cos Com COM 571748102 4,338 52,917 SH   SOLE   0 0 52,917
McDonalds Corp COM 580135101 290 1,848 SH   SOLE   0 0 1,848
Microsoft Corp Com COM 594918104 4,777 48,444 SH   SOLE   0 0 48,444
Nestle Sa-Adr Repstg COM 641069406 1,192 15,400 SH   SOLE   0 0 15,400
Norfolk Southern Corp COM 655844108 6,823 45,226 SH   SOLE   0 0 45,226
Norwegian Cruise Line Shs COM g66721104 5,148 108,954 SH   SOLE   0 0 108,954
Nvent Electric Plc Shs COM g6700g107 592 23,566 SH   SOLE   0 0 23,566
Paychex Inc COM 704326107 6,072 88,840 SH   SOLE   0 0 88,840
Pentair Ltd COM g7s00t104 992 23,566 SH   SOLE   0 0 23,566
Pepsico Inc COM 713448108 5,454 50,097 SH   SOLE   0 0 50,097
Pfizer Inc Com COM 717081103 604 16,654 SH   SOLE   0 0 16,654
Progressive Corp Ohio Com COM 743315103 8,722 147,462 SH   SOLE   0 0 147,462
Royal Dutch Shell Plc Adr Cl A COM 780257804 443 6,400 SH   SOLE   0 0 6,400
Ryanair Hldgs Plc Sponsored Ad COM 783513203 6,162 53,945 SH   SOLE   0 0 53,945
Sandy Spring Bancorp Com COM 800363103 3,923 95,658 SH   SOLE   0 0 95,658
Starbucks Corp Com COM 855244109 270 5,520 SH   SOLE   0 0 5,520
T Rowe Price Group Inc COM 74144t108 8,824 76,007 SH   SOLE   0 0 76,007
Teva Pharmaceutical Inds Adr COM 881624209 449 18,450 SH   SOLE   0 0 18,450
Tripadvisor Inc Com COM 896945201 1,990 35,715 SH   SOLE   0 0 35,715
Verizon Communications Com COM 92343v104 381 7,567 SH   SOLE   0 0 7,567
Wal Mart Stores Inc Com COM 931142103 4,485 52,360 SH   SOLE   0 0 52,360
Walgreens Boots Alliance Inc C COM 931427108 6,732 112,178 SH   SOLE   0 0 112,178
Walt Disney Holding Co COM 254687106 4,152 39,614 SH   SOLE   0 0 39,614
Washington Real Estate Inv Tr COM 939653101 399 13,149 SH   SOLE   0 0 13,149
Wells Fargo & Co COM 949746101 7,351 132,587 SH   SOLE   0 0 132,587
Whirlpool Corp Com COM 963320106 1,707 11,670 SH   SOLE   0 0 11,670