Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
MA	Mastercard	158,056	$31.06M	5.3%	$70.99	+154.0%	COMM	57636Q104
ADP	Automatic Data Processing	216,619	$29.06M	5.0%	$45.45	+137.1%	COMM	053015103
SYK	Stryker	125,954	$21.27M	3.6%	$61.57	+151.4%	COMM	863667101
TJX	TJX Companies	213,499	$20.32M	3.5%	$21.46	+84.3%	COMM	872540109
AAPL	Apple	103,039	$19.07M	3.3%	$18.35	+133.0%	COMM	037833100
ECL	Ecolab	129,998	$18.24M	3.1%	$74.34	+78.8%	COMM	278865100
NKE	NIKE 'B'	224,695	$17.9M	3.1%	$42.11	+51.6%	COMM	654106103
JNJ	Johnson & Johnson	117,295	$14.23M	2.4%	$61.57	+63.5%	COMM	478160104
MKC	McCormick	118,240	$13.73M	2.3%	$28.74	+58.0%	COMM	579780206
FISV	Fiserv	171,864	$12.73M	2.2%	$45.95	+58.0%	COMM	337738108
MCD	McDonald's	80,760	$12.65M	2.2%	$72.45	+87.1%	COMM	580135101
ABT	Abbott Labs	200,575	$12.23M	2.1%	$29.72	+78.8%	COMM	002824100
MSFT	Microsoft	122,962	$12.13M	2.1%	$26.70	+236.1%	COMM	594918104
XOM	ExxonMobil	140,030	$11.59M	2.0%	$53.89	+4.2%	COMM	30231G102
CHD	Church & Dwight	215,063	$11.43M	2.0%	$35.05	+25.8%	COMM	171340102
ABBV	AbbVie	116,180	$10.76M	1.8%	$27.98	+152.0%	COMM	00287Y109
KO	Coca-Cola	227,363	$9.972M	1.7%	$27.85	+22.1%	COMM	191216100
INTU	Intuit	47,257	$9.655M	1.6%	$57.59	+216.4%	COMM	461202103
CL	Colgate-Palmolive	146,513	$9.496M	1.6%	$44.45	+22.8%	COMM	194162103
NEE	NextEra Energy	53,714	$8.972M	1.5%	$23.03	+45.1%	COMM	65339F101
PG	Procter & Gamble	102,344	$7.989M	1.4%	$57.11	+8.2%	COMM	742718109
DHR	Danaher	78,545	$7.751M	1.3%	$41.02	+109.6%	COMM	235851102
FDS	FactSet Research Systems	38,678	$7.662M	1.3%	$93.65	+97.8%	COMM	303075105
BR	Broadridge Financial Solutions	66,009	$7.598M	1.3%	$42.94	+130.9%	COMM	11133T103
PEP	PepsiCo	68,475	$7.455M	1.3%	$56.78	+43.9%	COMM	713448108
—	United Technologies	57,344	$7.17M	1.2%	$95.26	—	COMM	913017109
IDXX	IDEXX Labs	31,198	$6.799M	1.2%	$66.90	+208.0%	COMM	45168D104
—	Celgene	81,440	$6.468M	1.1%	$102.98	—	COMM	151020104
DIS	Disney, Walt	60,385	$6.329M	1.1%	$89.01	+9.2%	COMM	254687106
BF/B	Brown-Forman 'B'	128,859	$6.315M	1.1%	$31.65	+52.2%	COMM	115637209
ACN	Accenture 'A'	38,419	$6.285M	1.1%	$81.04	+71.9%	COMM	G1151C101
PFF	iShares S&P US Pfd ETF	161,780	$6.101M	1.0%	$38.75	—	DEBT	464288687
AMT	American Tower	41,934	$6.046M	1.0%	$84.41	+34.8%	COMM	03027X100
SYY	Sysco	88,435	$6.039M	1.0%	$24.84	+110.4%	COMM	871829107
BDX	Becton, Dickinson	23,985	$5.746M	1.0%	$147.17	+34.8%	COMM	075887109
GOOGL	Alphabet Class A	5,060	$5.714M	1.0%	$41.36	+30.5%	COMM	02079K305
MPC	Marathon Petroleum	79,079	$5.548M	0.9%	$37.50	+60.1%	COMM	56585A102
ITW	Illinois Tool Works	39,170	$5.427M	0.9%	$58.53	+109.5%	COMM	452308109
USB	US Bancorp	98,665	$4.935M	0.8%	$24.69	+50.9%	COMM	902973304
—	Walgreens Boots Alliance	69,863	$4.193M	0.7%	$76.03	—	COMM	931427108
HD	Home Depot	20,395	$3.979M	0.7%	$90.18	+71.9%	COMM	437076102
SBUX	Starbucks	77,820	$3.802M	0.6%	$40.28	+19.3%	COMM	855244109
WSO	Watsco	21,250	$3.788M	0.6%	$151.06	+20.4%	COMM	942622200
PAYX	Paychex	53,175	$3.635M	0.6%	$26.63	+93.6%	COMM	704326107
WEX	WEX	18,240	$3.474M	0.6%	$96.52	+80.6%	COMM	96208T104
LLY	Lilly, Eli	40,533	$3.459M	0.6%	$43.48	+69.5%	COMM	532457108
BCPC	Balchem	34,985	$3.433M	0.6%	$48.33	+84.7%	COMM	057665200
MRK	Merck	55,575	$3.373M	0.6%	$41.06	+8.4%	COMM	58933Y105
VZ	Verizon Communications	64,994	$3.27M	0.6%	$27.59	+16.7%	COMM	92343V104
AMZN	Amazon.com	1,891	$3.214M	0.5%	$13.43	+491.1%	COMM	023135106
CSCO	Cisco Systems	74,206	$3.193M	0.5%	$15.33	+126.6%	COMM	17275R102
FDX	FedEx	14,059	$3.192M	0.5%	$211.26	+2.5%	COMM	31428X106
CTSH	Cognizant Technology	39,877	$3.15M	0.5%	$47.55	+48.1%	COMM	192446102
EL	Estee Lauder	21,283	$3.037M	0.5%	$76.46	+75.8%	COMM	518439104
HON	Honeywell Int'l	20,940	$3.016M	0.5%	$109.30	+3.9%	COMM	438516106
EMR	Emerson Electric	43,002	$2.973M	0.5%	$40.07	+46.4%	COMM	291011104
INTC	Intel	58,713	$2.919M	0.5%	$18.63	+141.8%	COMM	458140100
BRK/B	Berkshire Hathaway 'B'	15,434	$2.881M	0.5%	$149.94	+30.0%	COMM	084670702
APD	Air Products & Chemicals	18,157	$2.828M	0.5%	$61.75	+119.5%	COMM	009158106
QCOM	QUALCOMM	50,070	$2.81M	0.5%	$46.43	-1.1%	COMM	747525103
UNP	Union Pacific	19,341	$2.74M	0.5%	$74.60	+57.8%	COMM	907818108
LOW	Lowe's	28,575	$2.731M	0.5%	$32.88	+139.3%	COMM	548661107
JKHY	Jack Henry & Associates	20,670	$2.695M	0.5%	$57.63	+96.7%	COMM	426281101
WMT	Walmart	31,188	$2.671M	0.5%	$20.13	+25.4%	COMM	931142103
T	AT&T	82,634	$2.653M	0.5%	$12.27	+18.4%	COMM	00206R102
MMM	3M Company	12,214	$2.403M	0.4%	$75.07	+73.4%	COMM	88579Y101
HP	Helmerich & Payne	36,120	$2.303M	0.4%	$62.85	+8.3%	COMM	423452101
NVO	Novo Nordisk ADR	49,693	$2.292M	0.4%	$68.55	—	COMM	670100205
—	CDK Global	34,045	$2.215M	0.4%	$59.68	—	COMM	12508E101
AMGN	Amgen	11,964	$2.208M	0.4%	$73.61	+90.5%	COMM	031162100
PFE	Pfizer	57,613	$2.09M	0.4%	$17.94	+35.5%	COMM	717081103
—	Weingarten Realty	66,273	$2.042M	0.3%	$35.14	—	COMM	948741103
GILD	Gilead Sciences	28,756	$2.037M	0.3%	$55.92	-5.7%	COMM	375558103
GWW	Grainger, W.W.	6,512	$2.008M	0.3%	$204.51	+31.8%	COMM	384802104
—	Tiffany	15,025	$1.977M	0.3%	$75.16	—	COMM	886547108
V	Visa	13,386	$1.773M	0.3%	$79.38	+53.8%	COMM	92826C839
EOG	EOG Resources	13,730	$1.708M	0.3%	$60.19	+44.9%	COMM	26875P101
EXPD	Expeditors Int'l	22,274	$1.628M	0.3%	$32.01	+98.8%	COMM	302130109
FTV	Fortive	19,093	$1.472M	0.3%	$35.11	+31.9%	COMM	34959J108
PM	Philip Morris Int'l	18,109	$1.462M	0.2%	$49.72	+13.8%	COMM	718172109
DE	Deere & Company	10,250	$1.433M	0.2%	$68.53	+91.7%	COMM	244199105
EW	Edwards Lifesciences	9,548	$1.39M	0.2%	$39.23	+19.0%	COMM	28176E108
FAST	Fastenal	28,050	$1.35M	0.2%	$8.79	+20.9%	COMM	311900104
ISRG	Intuitive Surgical	2,820	$1.349M	0.2%	$101.54	+50.2%	COMM	46120E602
IBM	IBM	9,325	$1.303M	0.2%	$118.23	-15.5%	COMM	459200101
WELL	Welltower	20,625	$1.293M	0.2%	$54.00	-20.1%	COMM	95040Q104
PPG	PPG Industries	12,457	$1.292M	0.2%	$91.06	+0.6%	COMM	693506107
RHHBY	Roche Holding Ltd ADR	45,750	$1.264M	0.2%	$49.05	—	COMM	771195104
SLB	Schlumberger	18,781	$1.259M	0.2%	$55.08	+0.0%	COMM	806857108
FLO	Flowers Foods	58,125	$1.211M	0.2%	$13.95	+12.6%	COMM	343498101
—	Dr. Pepper Snapple	9,175	$1.119M	0.2%	$52.15	—	COMM	26138E109
CVS	CVS Health	16,250	$1.046M	0.2%	$57.13	-9.5%	COMM	126650100
—	Kellogg	13,600	$950K	0.2%	$38.92	+15.5%	COMM	487836108
BMY	Bristol-Myers Squibb	16,985	$940K	0.2%	$45.87	-11.4%	COMM	110122108
ZTS	Zoetis	10,875	$926K	0.2%	$54.54	+45.7%	COMM	98978V103
—	Marathon Oil	44,260	$923K	0.2%	$13.56	—	COMM	565849106
CVX	Chevron	6,897	$872K	0.1%	$73.38	+21.5%	COMM	166764100
—	Raytheon	4,453	$860K	0.1%	$187.85	—	COMM	755111507
BFS	Saul Centers	14,835	$795K	0.1%	$46.29	—	COMM	804395101
XRAY	Dentsply Sirona	17,773	$778K	0.1%	$59.08	-20.5%	COMM	24906P109
ROST	Ross Stores	9,160	$776K	0.1%	$38.79	+94.5%	COMM	778296103
CSX	CSX	12,156	$775K	0.1%	$6.66	+179.0%	COMM	126408103
—	Stericycle	11,822	$772K	0.1%	$112.40	—	COMM	858912108
HSIC	Henry Schein	10,504	$763K	0.1%	$52.84	+6.7%	COMM	806407102
ULTA	Ulta Beauty	3,095	$723K	0.1%	$211.83	+14.0%	COMM	90384S303
EQR	Equity Residential Properties	10,720	$683K	0.1%	$31.42	+49.2%	COMM	29476L107
HSY	Hershey Company	7,235	$673K	0.1%	$72.89	+6.8%	COMM	427866108
HCSG	Healthcare Services Group	15,100	$652K	0.1%	$27.95	+42.1%	COMM	421906108
HPQ	HP	27,700	$629K	0.1%	$11.22	+53.6%	COMM	40434L105
—	General Electric	46,047	$627K	0.1%	$23.44	—	COMM	369604103
—	DowDupont	9,138	$602K	0.1%	$69.18	—	COMM	26078J100
—	Fortune Brands Home & Security	10,847	$582K	0.1%	$66.64	—	COMM	34964c106
ALCO	Alico	17,866	$566K	0.1%	$27.33	-1.4%	COMM	016230104
JPM	JPMorgan Chase	5,332	$556K	0.1%	$48.47	+83.7%	COMM	46625H100
—	HCP	19,000	$491K	0.1%	$43.65	—	COMM	40414L109
CAT	Caterpillar	3,553	$482K	0.1%	$60.35	+109.7%	COMM	149123101
PRAA	PRA Group	12,350	$476K	0.1%	$34.09	+13.1%	COMM	69354N106
TRMB	Trimble	13,760	$452K	0.1%	$29.78	+16.5%	COMM	896239100
SEIC	SEI Investments	7,000	$438K	0.1%	$26.47	+127.0%	COMM	784117103
—	WGL Holdings	4,717	$419K	0.1%	$61.55	—	COMM	92924F106
DUK	Duke Energy	5,180	$410K	0.1%	$42.75	+32.0%	COMM	26441C204
HPE	Hewlett Packard Enterprise	27,700	$405K	0.1%	$6.50	+100.3%	COMM	42824C109
MO	Altria	7,036	$400K	0.1%	$25.81	+24.7%	COMM	02209S103
COP	ConocoPhillips	5,735	$399K	0.1%	$44.54	+16.3%	COMM	20825C104
NOC	Northrop Grumman	1,282	$394K	0.1%	$114.24	+155.2%	COMM	666807102
—	Aetna	2,000	$367K	0.1%	$127.00	—	COMM	00817Y108
STT	State Street	3,899	$363K	0.1%	$61.78	+26.0%	COMM	857477103
GPC	Genuine Parts	3,885	$357K	0.1%	$62.69	+16.6%	COMM	372460105
—	Noble Energy	9,900	$349K	0.1%	$60.00	—	COMM	655044105
NSC	Norfolk Southern	2,255	$340K	0.1%	$107.13	+16.9%	COMM	655844108
INGR	Ingredion	3,000	$332K	0.1%	$80.34	+46.4%	COMM	457187102
WY	Weyerhaeuser	9,088	$331K	0.1%	$19.24	+40.7%	COMM	962166104
PSX	Phillips 66	2,812	$316K	0.1%	$65.92	+26.1%	COMM	718546104
PGR	Progressive	5,200	$308K	0.1%	$29.31	+64.8%	COMM	743315103
MDLZ	Mondelez Int'l	7,507	$308K	0.1%	$28.45	+17.2%	COMM	609207105
BRK/A	Berkshire Hathaway 'A'	1	$282K	0.0%	$199512.94	+46.8%	COMM	084670108
COST	Costco Wholesale	1,314	$275K	0.0%	$140.12	+26.9%	COMM	22160K105
SU	Suncor Energy	6,750	$275K	0.0%	$23.36	+25.0%	COMM	867224107
BKNG	Booking Holdings	131	$266K	0.0%	$1933.58	+7.2%	COMM	09857L108
—	L3 Technologies	1,350	$260K	0.0%	$197.89	—	COMM	502413107
CTAS	Cintas	1,400	$259K	0.0%	$30.49	+36.6%	COMM	172908105
KHC	Kraft Heinz	3,908	$246K	0.0%	$48.53	-15.3%	COMM	500754106
—	Praxair	1,470	$232K	0.0%	$116.25	—	COMM	74005P104
LRLCY	L'Oreal ADR	4,650	$229K	0.0%	$44.30	—	COMM	502117203
CMI	Cummins	1,700	$226K	0.0%	$89.89	+36.4%	COMM	231021106
ADI	Analog Devices	2,322	$223K	0.0%	$78.62	+4.2%	COMM	032654105
TECH	Bio-Techne	1,500	$222K	0.0%	$33.97	+8.3%	COMM	09073M104
ORCL	Oracle	4,951	$218K	0.0%	$37.56	+9.6%	COMM	68389X105
KIM	Kimco Realty	12,650	$215K	0.0%	$12.78	-18.6%	COMM	49446R109