Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
MA	Mastercard	154,970	$36.49M	5.7%	$72.81	+184.6%	COMM	57636Q104
ADP	Automatic Data Processing	206,558	$33M	5.1%	$45.45	+176.0%	COMM	053015103
SYK	Stryker	118,618	$23.43M	3.6%	$61.57	+171.4%	COMM	863667101
TJX	TJX Companies	429,914	$22.88M	3.6%	$33.83	+34.4%	COMM	872540109
ECL	Ecolab	127,871	$22.57M	3.5%	$74.34	+103.0%	COMM	278865100
AAPL	Apple	103,011	$19.57M	3.0%	$18.62	+117.2%	COMM	037833100
NKE	NIKE 'B'	218,435	$18.39M	2.9%	$42.11	+79.0%	COMM	654106103
MKC	McCormick	118,928	$17.91M	2.8%	$29.42	+100.9%	COMM	579780206
JNJ	Johnson & Johnson	118,220	$16.53M	2.6%	$62.43	+76.7%	COMM	478160104
ABT	Abbott Labs	194,548	$15.55M	2.4%	$29.72	+122.4%	COMM	002824100
FISV	Fiserv	173,084	$15.28M	2.4%	$46.32	+78.1%	COMM	337738108
CHD	Church & Dwight	214,468	$15.28M	2.4%	$35.05	+72.9%	COMM	171340102
MCD	McDonald's	79,415	$15.08M	2.3%	$72.45	+113.4%	COMM	580135101
MSFT	Microsoft	124,524	$14.69M	2.3%	$28.93	+253.6%	COMM	594918104
INTU	Intuit	46,008	$12.03M	1.9%	$57.59	+283.8%	COMM	461202103
DHR	Danaher	85,967	$11.35M	1.8%	$45.56	+118.2%	COMM	235851102
NEE	NextEra Energy	55,264	$10.68M	1.7%	$23.47	+64.4%	COMM	65339F101
XOM	ExxonMobil	128,904	$10.41M	1.6%	$53.89	+2.9%	COMM	30231G102
PG	Procter & Gamble	95,117	$9.897M	1.5%	$57.11	+43.7%	COMM	742718109
KO	Coca-Cola	209,307	$9.808M	1.5%	$27.85	+35.6%	COMM	191216100
FDS	FactSet Research Systems	37,785	$9.381M	1.5%	$93.65	+123.4%	COMM	303075105
AMT	American Tower	46,142	$9.093M	1.4%	$88.53	+64.9%	COMM	03027X100
ABBV	AbbVie	110,683	$8.92M	1.4%	$27.98	+118.1%	COMM	00287Y109
BDX	Becton, Dickinson	33,261	$8.306M	1.3%	$165.67	+28.4%	COMM	075887109
PEP	PepsiCo	65,753	$8.058M	1.3%	$56.78	+62.8%	COMM	713448108
CL	Colgate-Palmolive	115,520	$7.918M	1.2%	$44.45	+23.7%	COMM	194162103
BR	Broadridge Financial Solutions	75,494	$7.828M	1.2%	$49.91	+78.6%	COMM	11133T103
DIS	Disney, Walt	66,787	$7.415M	1.2%	$90.74	+18.9%	COMM	254687106
BF/B	Brown-Forman 'B'	134,282	$7.087M	1.1%	$32.20	+34.0%	COMM	115637209
GOOGL	Alphabet Class A	5,788	$6.812M	1.1%	$43.20	+29.7%	COMM	02079K305
—	United Technologies	52,591	$6.778M	1.1%	$95.26	—	COMM	913017109
ACN	Accenture 'A'	37,354	$6.575M	1.0%	$81.04	+75.4%	COMM	G1151C101
IDXX	IDEXX Labs	28,055	$6.273M	1.0%	$66.90	+208.6%	COMM	45168D104
ITW	Illinois Tool Works	43,433	$6.234M	1.0%	$64.66	+80.9%	COMM	452308109
PFF	iShares S&P US Pfd ETF	154,580	$5.65M	0.9%	$37.89	—	DEBT	464288687
SYY	Sysco	84,176	$5.62M	0.9%	$24.84	+117.9%	COMM	871829107
LLY	Lilly, Eli	40,253	$5.223M	0.8%	$43.48	+155.1%	COMM	532457108
HD	Home Depot	25,798	$4.95M	0.8%	$103.58	+49.4%	COMM	437076102
USB	US Bancorp	96,892	$4.669M	0.7%	$24.69	+52.3%	COMM	902973304
MPC	Marathon Petroleum	76,120	$4.556M	0.7%	$37.50	+34.5%	COMM	56585A102
WEX	WEX	22,480	$4.316M	0.7%	$110.38	+53.1%	COMM	96208T104
MRK	Merck	50,401	$4.192M	0.7%	$41.06	+46.9%	COMM	58933Y105
PAYX	Paychex	51,970	$4.168M	0.6%	$26.63	+127.0%	COMM	704326107
HON	Honeywell Int'l	26,221	$4.167M	0.6%	$111.64	+8.5%	COMM	438516106
AMZN	Amazon.com	2,169	$3.862M	0.6%	$22.31	+273.1%	COMM	023135106
VZ	Verizon Communications	65,105	$3.85M	0.6%	$27.59	+41.2%	COMM	92343V104
EL	Estee Lauder	23,039	$3.814M	0.6%	$80.15	+67.9%	COMM	518439104
CSCO	Cisco Systems	69,461	$3.75M	0.6%	$15.33	+157.7%	COMM	17275R102
—	Walgreens Boots Alliance	58,853	$3.724M	0.6%	$76.03	—	COMM	931427108
BRK/B	Berkshire Hathaway 'B'	18,242	$3.665M	0.6%	$157.44	+28.2%	COMM	084670702
SBUX	Starbucks	48,670	$3.618M	0.6%	$41.66	+42.2%	COMM	855244109
WSO	Watsco	23,635	$3.385M	0.5%	$152.85	-6.1%	COMM	942622200
APD	Air Products & Chemicals	17,607	$3.362M	0.5%	$61.75	+135.8%	COMM	009158106
UNP	Union Pacific	19,205	$3.211M	0.5%	$74.60	+85.1%	COMM	907818108
BCPC	Balchem	33,325	$3.093M	0.5%	$48.33	+72.0%	COMM	057665200
WMT	Walmart	31,178	$3.041M	0.5%	$20.13	+45.3%	COMM	931142103
INTC	Intel	54,842	$2.945M	0.5%	$18.63	+135.3%	COMM	458140100
LOW	Lowe's	26,721	$2.925M	0.5%	$32.88	+167.9%	COMM	548661107
QCOM	QUALCOMM	49,210	$2.806M	0.4%	$46.43	-1.5%	COMM	747525103
CTSH	Cognizant Technology	38,246	$2.771M	0.4%	$48.24	+31.0%	COMM	192446102
EMR	Emerson Electric	40,000	$2.739M	0.4%	$40.07	+39.8%	COMM	291011104
FDX	FedEx	15,031	$2.727M	0.4%	$207.53	-24.9%	COMM	31428X106
JKHY	Jack Henry & Associates	19,295	$2.677M	0.4%	$57.63	+111.3%	COMM	426281101
NVO	Novo Nordisk ADR	47,525	$2.486M	0.4%	$68.55	—	COMM	670100205
PFE	Pfizer	56,702	$2.408M	0.4%	$17.94	+63.0%	COMM	717081103
EW	Edwards Lifesciences	11,893	$2.275M	0.4%	$41.64	+37.1%	COMM	28176E108
MMM	3M Company	10,839	$2.252M	0.4%	$75.07	+74.6%	COMM	88579Y101
V	Visa	14,260	$2.227M	0.3%	$83.06	+65.4%	COMM	92826C839
AMGN	Amgen	11,563	$2.197M	0.3%	$73.61	+110.1%	COMM	031162100
T	AT&T	69,102	$2.167M	0.3%	$12.30	+15.1%	COMM	00206R102
GWW	Grainger, W.W.	6,332	$1.905M	0.3%	$204.51	+32.9%	COMM	384802104
HP	Helmerich & Payne	33,470	$1.86M	0.3%	$62.85	-13.3%	COMM	423452101
—	CDK Global	31,548	$1.856M	0.3%	$59.68	—	COMM	12508E101
FTV	Fortive	20,963	$1.759M	0.3%	$36.25	+30.6%	COMM	34959J108
—	Weingarten Realty	59,048	$1.734M	0.3%	$35.14	—	COMM	948741103
FAST	Fastenal	26,750	$1.72M	0.3%	$8.79	+43.7%	COMM	311900104
DE	Deere & Company	10,229	$1.635M	0.3%	$68.53	+110.9%	COMM	244199105
WELL	Welltower	20,625	$1.601M	0.2%	$54.00	+11.7%	COMM	95040Q104
EXPD	Expeditors Int'l	20,774	$1.577M	0.2%	$32.01	+107.4%	COMM	302130109
—	Tiffany	14,650	$1.546M	0.2%	$75.16	—	COMM	886547108
ISRG	Intuitive Surgical	2,706	$1.544M	0.2%	$101.54	+75.0%	COMM	46120E602
PPG	PPG Industries	12,457	$1.406M	0.2%	$91.06	+3.1%	COMM	693506107
PM	Philip Morris Int'l	15,634	$1.382M	0.2%	$49.72	+12.8%	COMM	718172109
GILD	Gilead Sciences	21,184	$1.377M	0.2%	$55.92	-9.1%	COMM	375558103
—	Celgene	14,375	$1.356M	0.2%	$102.98	—	COMM	151020104
RHHBY	Roche Holding Ltd ADR	38,350	$1.319M	0.2%	$49.05	—	COMM	771195104
EOG	EOG Resources	13,849	$1.318M	0.2%	$60.19	+19.5%	COMM	26875P101
IBM	IBM	9,157	$1.292M	0.2%	$118.23	-20.0%	COMM	459200101
ULTA	Ulta Beauty	3,697	$1.289M	0.2%	$220.93	+36.9%	COMM	90384S303
FLO	Flowers Foods	53,625	$1.143M	0.2%	$13.95	+8.7%	COMM	343498101
ZTS	Zoetis	10,769	$1.084M	0.2%	$54.54	+57.5%	COMM	98978V103
EPAM	EPAM Systems	6,000	$1.015M	0.2%	$149.89	0.0%	COMM	29414B104
CSX	CSX	12,156	$910K	0.1%	$6.66	+216.7%	COMM	126408103
BFS	Saul Centers	15,835	$813K	0.1%	$46.35	—	COMM	804395101
CVX	Chevron	6,485	$799K	0.1%	$74.33	+17.7%	COMM	166764100
—	Kellogg	13,600	$780K	0.1%	$38.92	+6.5%	COMM	487836108
EQR	Equity Residential Properties	10,220	$770K	0.1%	$31.42	+76.8%	COMM	29476L107
ROST	Ross Stores	8,228	$766K	0.1%	$38.79	+120.9%	COMM	778296103
—	Marathon Oil	43,588	$728K	0.1%	$13.56	—	COMM	565849106
BMY	Bristol-Myers Squibb	15,036	$717K	0.1%	$45.87	-16.5%	COMM	110122108
—	Raytheon	3,777	$688K	0.1%	$187.85	—	COMM	755111507
BAC	Bank of America	24,902	$687K	0.1%	$23.89	0.0%	COMM	060505104
CVS	CVS Health	11,982	$646K	0.1%	$57.27	-13.6%	COMM	126650100
HSY	Hershey Company	5,580	$641K	0.1%	$72.89	+27.3%	COMM	427866108
HSIC	Henry Schein	10,104	$607K	0.1%	$52.84	+14.2%	COMM	806407102
SLB	Schlumberger	13,046	$568K	0.1%	$55.08	-35.1%	COMM	806857108
TRMB	Trimble	13,835	$559K	0.1%	$29.78	+27.4%	COMM	896239100
HPQ	HP	27,776	$540K	0.1%	$11.22	+48.9%	COMM	40434L105
HCSG	Healthcare Services Group	16,050	$529K	0.1%	$28.72	+33.4%	COMM	421906108
JPM	JPMorgan Chase	4,962	$502K	0.1%	$48.47	+76.1%	COMM	46625H100
—	Fortune Brands Home & Security	10,347	$493K	0.1%	$66.64	—	COMM	34964c106
—	DowDupont	9,138	$487K	0.1%	$69.18	—	COMM	26078J100
ALCO	Alico	17,866	$486K	0.1%	$27.33	-5.9%	COMM	016230104
—	HCP	15,500	$485K	0.1%	$43.65	—	COMM	40414L109
DUK	Duke Energy	5,180	$466K	0.1%	$42.75	+56.5%	COMM	26441C204
XRAY	Dentsply Sirona	8,900	$441K	0.1%	$59.08	-25.5%	COMM	24906P109
GPC	Genuine Parts	3,885	$435K	0.1%	$62.69	+35.2%	COMM	372460105
—	General Electric	42,954	$429K	0.1%	$17.79	—	COMM	369604103
HPE	Hewlett Packard Enterprise	27,700	$427K	0.1%	$6.50	+90.3%	COMM	42824C109
NSC	Norfolk Southern	2,114	$395K	0.1%	$107.13	+40.5%	COMM	655844108
SHW	Sherwin-Williams	895	$385K	0.1%	$135.72	-3.6%	COMM	824348106
LKQ	LKQ	13,500	$383K	0.1%	$24.16	0.0%	COMM	501889208
PGR	Progressive	5,228	$377K	0.1%	$29.31	+89.3%	COMM	743315103
CAT	Caterpillar	2,753	$373K	0.1%	$60.35	+89.9%	COMM	149123101
NOC	Northrop Grumman	1,370	$369K	0.1%	$122.55	+98.8%	COMM	666807102
TMO	Thermo Fisher Scientific	1,349	$369K	0.1%	$230.43	+6.1%	COMM	883556102
SEIC	SEI Investments	7,000	$366K	0.1%	$26.47	+72.8%	COMM	784117103
MO	Altria	6,300	$362K	0.1%	$25.81	+15.1%	COMM	02209S103
MDLZ	Mondelez Int'l	6,807	$340K	0.1%	$28.45	+36.2%	COMM	609207105
COST	Costco Wholesale	1,359	$329K	0.1%	$142.82	+38.9%	COMM	22160K105
COP	ConocoPhillips	4,663	$311K	0.0%	$44.54	+18.9%	COMM	20825C104
ORLY	O'Reilly Automotive	800	$311K	0.0%	$24.19	0.0%	COMM	67103H107
BRK/A	Berkshire Hathaway 'A'	1	$301K	0.0%	$199512.94	+51.8%	COMM	084670108
TECH	Bio-Techne	1,500	$298K	0.0%	$33.97	+28.4%	COMM	09073M104
—	Stericycle	5,397	$294K	0.0%	$112.40	—	COMM	858912108
INGR	Ingredion	3,000	$284K	0.0%	$80.34	+17.6%	COMM	457187102
—	L3 Technologies	1,350	$279K	0.0%	$197.89	—	COMM	502413107
PYPL	Paypal Holdings	2,551	$265K	0.0%	$94.45	0.0%	COMM	70450Y103
—	Versum Materials	5,178	$261K	0.0%	$50.41	—	COMM	92532W103
CMI	Cummins	1,650	$260K	0.0%	$89.89	+39.9%	COMM	231021106
ILMN	Illumina	825	$256K	0.0%	$291.63	0.0%	COMM	452327109
WM	Waste Management	2,450	$255K	0.0%	$78.27	+11.2%	COMM	94106L109
FPE	1st Trust Pfd Sec & Inc ETF	13,000	$248K	0.0%	$19.08	—	DEBT	33739E108
—	Noble Energy	9,900	$245K	0.0%	$24.75	—	COMM	655044105
ORCL	Oracle	4,311	$232K	0.0%	$37.56	+22.7%	COMM	68389X105
RCL	Royal Caribbean Cruises	2,000	$229K	0.0%	$108.13	0.0%	COMM	V7780T103
BKNG	Booking Holdings	130	$227K	0.0%	$1931.02	-9.1%	COMM	09857L108
PSX	Phillips 66	2,296	$219K	0.0%	$65.92	+9.1%	COMM	718546104
CNMD	Conmed	2,625	$218K	0.0%	$68.36	0.0%	COMM	207410101
D	Dominion Energy	2,800	$215K	0.0%	$53.23	+1.2%	COMM	25746U109
KDP	Keurig Dr. Pepper	7,475	$209K	0.0%	$19.52	+16.9%	COMM	49271V100
STT	State Street	3,099	$204K	0.0%	$61.78	-10.3%	COMM	857477103
WY	Weyerhaeuser	7,728	$204K	0.0%	$19.29	0.0%	COMM	962166104
CTAS	Cintas	1,000	$202K	0.0%	$45.33	0.0%	COMM	172908105
KIM	Kimco Realty	10,650	$197K	0.0%	$12.78	-2.5%	COMM	49446R109