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
3M COMPANY COM 88579Y101 3,757 24,088 SH   SOLE 0 0 0 24,088
AT&T COM 00206R102 6,228 206,035 SH   SOLE 0 0 0 206,035
ABBVIE COM 00287y109 8,182 83,337 SH   SOLE 0 0 0 83,337
ALLIANCE RES PARTNERS LP COM 01877r108 1,765 541,677 SH   SOLE 0 0 0 541,677
ALPHABET INC CAP STK CLC COM 02079K107 1,484 1,050 SH   SOLE 0 0 0 1,050
AMAZON.COM COM 023135106 1,807 655 SH   SOLE 0 0 0 655
AMGEN COM 031162100 5,349 22,681 SH   SOLE 0 0 0 22,681
APPLE INC COM 037833100 17,314 47,464 SH   SOLE 0 0 0 47,464
BANK OF AMERICA COM 060505104 2,388 100,572 SH   SOLE 0 0 0 100,572
BP MIDSTREAM PARTNERS COM 055622104 2,687 234,274 SH   SOLE 0 0 0 234,274
BRISTOL-MYERS SQUIBB COCOM COM 110122108 323 5,510 SH   SOLE 0 0 0 5,510
CALIFORNIA RES CORP COM 13057q206 240 197,005 SH   SOLE 0 0 0 197,005
CALUMET SPECIALTY PROD COM 131476103 9,913 4,348,014 SH   SOLE 0 0 0 4,348,014
CATERPILLAR INC COM 149123101 6,260 49,489 SH   SOLE 0 0 0 49,489
CHEVRON CORPORATION COM 166764100 8,064 90,376 SH   SOLE 0 0 0 90,376
CISCO SYSTEMS INC COM 17275R102 4,845 103,890 SH   SOLE 0 0 0 103,890
CUMMINS INC COM 231021106 6,658 38,433 SH   SOLE 0 0 0 38,433
CVS HEALTH CORP COM 126650100 5,141 79,140 SH   SOLE 0 0 0 79,140
DORCHESTER MINERALS LP COM 25820R105 9,180 718,320 SH   SOLE 0 0 0 718,320
DOUGHERTYS PHARMACY INCCOM COM 258711100 1 117,114 SH   SOLE 0 0 0 117,114
ENBRIDGE INC COM 29250N105 481 15,839 SH   SOLE 0 0 0 15,839
ENERGY TRANSFER LP COM 29273V100 6,333 889,483 SH   SOLE 0 0 0 889,483
ENTERPRISE PRODUCTS PPTNSLP COM 293792107 2,746 151,145 SH   SOLE 0 0 0 151,145
FACEBOOK INC-CLASS A COM 30303M102 1,650 7,268 SH   SOLE 0 0 0 7,268
FIRST FINANCIAL BANKSHARES INC COM 32020R109 253 8,760 SH   SOLE 0 0 0 8,760
GAP INC COM 364760108 4,717 373,792 SH   SOLE 0 0 0 373,792
GENERAL ELECTRIC CO COM 369604103 430 62,988 SH   SOLE 0 0 0 62,988
GOLDMAN SACHS GROUP COM 38141G104 5,371 27,181 SH   SOLE 0 0 0 27,181
HERSHEY COMPANY COM 427866108 2,026 15,636 SH   SOLE 0 0 0 15,636
HOLLYFRONTIER COPR COM 436106108 5,296 181,397 SH   SOLE 0 0 0 181,397
HP INC COM 40434L105 5,241 300,703 SH   SOLE 0 0 0 300,703
IBM CORP COM 459200101 6,359 52,656 SH   SOLE 0 0 0 52,656
INTEL CORP COM 458140100 7,762 129,741 SH   SOLE 0 0 0 129,741
ISHARES IBOXX INVESTMENT GRADE CORP BONDS COM 464287242 1,075 7,994 SH   SOLE 0 0 0 7,994
ISHARES INC MSCI PACIFICEX JAPAN ETF COM 464286665 530 13,354 SH   SOLE 0 0 0 13,354
ISHARES MSCI EAFE ETF COM 464287465 529 8,691 SH   SOLE 0 0 0 8,691
ISHARES TR PFD AND INCM SEC COM 464288687 253 7,307 SH   SOLE 0 0 0 7,307
ISHARES TRUST MSCI EMGMKTS ETF COM 464287234 534 13,373 SH   SOLE 0 0 0 13,373
JOHNSON & JOHNSON COM 478160104 2,247 15,980 SH   SOLE 0 0 0 15,980
KIMBERLY-CLARK CORP COM 494368103 3,848 27,227 SH   SOLE 0 0 0 27,227
KINDER MORGAN INC COM 49456b101 3,199 210,893 SH   SOLE 0 0 0 210,893
KOHLS CORP COM 500255104 3,150 151,685 SH   SOLE 0 0 0 151,685
KRAFT HEINZ CO COM 500754106 854 26,785 SH   SOLE 0 0 0 26,785
MAGELLAN MIDSTREAM PARTNERSLP COMUNIT REPS COM 559080106 1,364 31,619 SH   SOLE 0 0 0 31,619
MICROSOFT CORP COM 594918104 4,923 24,195 SH   SOLE 0 0 0 24,195
MOLSON COORS BEVERAGE CL CLASS B COM 60871r209 3,397 98,875 SH   SOLE 0 0 0 98,875
MPLX LP COM 55336V100 3,073 177,847 SH   SOLE 0 0 0 177,847
NUSTAR ENERGY LP COM 67058h102 5,064 354,664 SH   SOLE 0 0 0 354,664
NVIDIA CORPORATION COM COM 67066G104 1,624 4,275 SH   SOLE 0 0 0 4,275
OCCIDENTAL PETROL CORP COM 674599105 69,504 3,798,042 SH   SOLE 0 0 0 3,798,042
ONEOK INC COM 682680103 1,290 38,836 SH   SOLE 0 0 0 38,836
PEPSICO INC COM 713448108 4,051 30,635 SH   SOLE 0 0 0 30,635
PFIZER INC COM 717081103 7,587 232,020 SH   SOLE 0 0 0 232,020
PHILIPS 66 COM COM 718546104 1,432 19,920 SH   SOLE 0 0 0 19,920
PLAINS ALL AMERICAN PIPELINE LP COM 726503105 3,957 447,708 SH   SOLE 0 0 0 447,708
PLAINS GP HOLDINGS LP COM 72651A207 287 32,300 SH   SOLE 0 0 0 32,300
PROCTER AND GAMBLE CO COM 742718109 1,524 12,750 SH   SOLE 0 0 0 12,750
SELECT ENERGY SVCS INC COM 81617j301 2,004 409,161 SH   SOLE 0 0 0 409,161
SHELL MIDSTREAM PARTNERS COM 822634101 2,163 176,348 SH   SOLE 0 0 0 176,348
SMUCKER J M CO COM 832696405 4,514 42,667 SH   SOLE 0 0 0 42,667
SUN COMMUNITIES REIT COM 866674104 6,577 48,480 SH   SOLE 0 0 0 48,480
SUNCOKE ENERGY LP COM 86722A103 191 64,612 SH   SOLE 0 0 0 64,612
SUNOCO LP COM 86765K109 6,780 296,978 SH   SOLE 0 0 0 296,978
TARGA RES CORP COM 87612G101 219 10,956 SH   SOLE 0 0 0 10,956
TRINITY PETROLEUM COM 896556107 504 7,159 SH   SOLE 0 0 0 7,159
UNITED PARCEL SVC COM 911312106 2,781 25,022 SH   SOLE 0 0 0 25,022
UNIVERSAL CORP VA COM 913456109 4,799 112,904 SH   SOLE 0 0 0 112,904
VALERO ENERGY CORP NEW COM 91913Y100 5,281 89,791 SH   SOLE 0 0 0 89,791
VERIZON COMMUNICATIONS COM 92343V104 7,281 132,071 SH   SOLE 0 0 0 132,071
WALMART INC COM 931142103 6,084 50,800 SH   SOLE 0 0 0 50,800
WELLS FARGO & CO COM 949746101 4,350 169,942 SH   SOLE 0 0 0 169,942
WESTERN MIDSTREAM PARTNERS LP COM 958669103 3,056 304,421 SH   SOLE 0 0 0 304,421
WEYERHAEUSER CO COM COM 962166104 4,053 180,493 SH   SOLE 0 0 0 180,493
WILLIAMS COS INC COM 969457100 1,226 64,491 SH   SOLE 0 0 0 64,491