Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
MA	Mastercard	152,424	$40.32M	6.0%	$72.81	+231.5%	COMM	57636Q104
ADP	Automatic Data Processing	205,033	$33.9M	5.1%	$45.45	+210.2%	COMM	053015103
ECL	Ecolab	126,371	$24.95M	3.7%	$74.34	+133.0%	COMM	278865100
SYK	Stryker	118,593	$24.38M	3.7%	$61.57	+188.8%	COMM	863667101
TJX	TJX Companies	431,484	$22.82M	3.4%	$33.83	+43.9%	COMM	872540109
AAPL	Apple	102,068	$20.2M	3.0%	$18.62	+150.4%	COMM	037833100
MKC	McCormick	118,708	$18.4M	2.8%	$29.42	+130.4%	COMM	579780206
NKE	NIKE 'B'	218,513	$18.34M	2.8%	$42.11	+83.1%	COMM	654106103
MSFT	Microsoft	135,149	$18.11M	2.7%	$36.05	+231.6%	COMM	594918104
MCD	McDonald's	79,399	$16.49M	2.5%	$72.45	+134.3%	COMM	580135101
JNJ	Johnson & Johnson	117,185	$16.32M	2.4%	$62.43	+83.8%	COMM	478160104
ABT	Abbott Labs	192,008	$16.15M	2.4%	$29.72	+136.3%	COMM	002824100
FISV	Fiserv	171,839	$15.66M	2.4%	$46.32	+89.2%	COMM	337738108
CHD	Church & Dwight	213,518	$15.6M	2.3%	$35.05	+96.1%	COMM	171340102
DHR	Danaher	85,492	$12.22M	1.8%	$45.56	+152.3%	COMM	235851102
INTU	Intuit	45,500	$11.89M	1.8%	$57.59	+322.7%	COMM	461202103
NEE	NextEra Energy	55,314	$11.33M	1.7%	$23.47	+78.0%	COMM	65339F101
FDS	FactSet Research Systems	37,385	$10.71M	1.6%	$93.65	+177.2%	COMM	303075105
KO	Coca-Cola	207,582	$10.57M	1.6%	$27.85	+43.3%	COMM	191216100
PG	Procter & Gamble	94,795	$10.39M	1.6%	$57.11	+58.5%	COMM	742718109
XOM	ExxonMobil	127,421	$9.764M	1.5%	$53.89	+5.5%	COMM	30231G102
BR	Broadridge Financial Solutions	76,434	$9.759M	1.5%	$50.62	+112.4%	COMM	11133T103
DIS	Disney, Walt	68,102	$9.51M	1.4%	$91.46	+40.0%	COMM	254687106
AMT	American Tower	45,882	$9.381M	1.4%	$88.53	+90.0%	COMM	03027X100
BDX	Becton, Dickinson	34,193	$8.617M	1.3%	$166.87	+25.7%	COMM	075887109
PEP	PepsiCo	64,228	$8.422M	1.3%	$56.78	+84.5%	COMM	713448108
CL	Colgate-Palmolive	112,660	$8.074M	1.2%	$44.45	+36.8%	COMM	194162103
ABBV	AbbVie	108,118	$7.862M	1.2%	$27.98	+112.2%	COMM	00287Y109
IDXX	IDEXX Labs	27,780	$7.649M	1.1%	$66.90	+268.3%	COMM	45168D104
BF/B	Brown-Forman 'B'	133,412	$7.395M	1.1%	$32.20	+47.8%	COMM	115637209
—	United Technologies	52,691	$6.86M	1.0%	$95.26	—	COMM	913017109
ACN	Accenture 'A'	36,979	$6.833M	1.0%	$81.04	+102.0%	COMM	G1151C101
ITW	Illinois Tool Works	42,818	$6.457M	1.0%	$64.66	+98.8%	COMM	452308109
GOOGL	Alphabet Class A	5,814	$6.295M	0.9%	$43.20	+33.0%	COMM	02079K305
SYY	Sysco	81,676	$5.776M	0.9%	$24.84	+139.8%	COMM	871829107
PFF	iShares S&P US Pfd ETF	156,480	$5.766M	0.9%	$37.88	—	DEBT	464288687
HD	Home Depot	26,413	$5.493M	0.8%	$105.12	+61.3%	COMM	437076102
USB	US Bancorp	95,467	$5.002M	0.8%	$24.69	+57.7%	COMM	902973304
WEX	WEX	22,700	$4.724M	0.7%	$110.38	+82.3%	COMM	96208T104
HON	Honeywell Int'l	27,041	$4.721M	0.7%	$112.46	+23.3%	COMM	438516106
LLY	Lilly, Eli	40,253	$4.46M	0.7%	$43.48	+148.4%	COMM	532457108
EL	Estee Lauder	23,389	$4.283M	0.6%	$81.29	+93.0%	COMM	518439104
MPC	Marathon Petroleum	76,357	$4.267M	0.6%	$37.50	+18.1%	COMM	56585A102
MRK	Merck	50,373	$4.224M	0.6%	$41.06	+51.3%	COMM	58933Y105
PAYX	Paychex	50,845	$4.184M	0.6%	$26.63	+161.3%	COMM	704326107
AMZN	Amazon.com	2,195	$4.157M	0.6%	$23.14	+302.5%	COMM	023135106
SBUX	Starbucks	48,395	$4.057M	0.6%	$41.66	+63.1%	COMM	855244109
APD	Air Products & Chemicals	17,607	$3.986M	0.6%	$61.75	+185.4%	COMM	009158106
BRK/B	Berkshire Hathaway 'B'	18,376	$3.917M	0.6%	$157.44	+31.4%	COMM	084670702
WSO	Watsco	23,925	$3.912M	0.6%	$152.90	+2.7%	COMM	942622200
QCOM	QUALCOMM	48,810	$3.713M	0.6%	$46.43	+35.1%	COMM	747525103
VZ	Verizon Communications	64,306	$3.674M	0.6%	$27.59	+45.1%	COMM	92343V104
CSCO	Cisco Systems	66,815	$3.657M	0.5%	$15.33	+194.7%	COMM	17275R102
WMT	Walmart	31,153	$3.442M	0.5%	$20.13	+55.5%	COMM	931142103
BCPC	Balchem	33,025	$3.302M	0.5%	$48.33	+93.8%	COMM	057665200
UNP	Union Pacific	19,105	$3.231M	0.5%	$74.60	+98.1%	COMM	907818108
—	Walgreens Boots Alliance	53,853	$2.944M	0.4%	$76.03	—	COMM	931427108
INTC	Intel	56,336	$2.697M	0.4%	$19.28	+123.5%	COMM	458140100
LOW	Lowe's	26,446	$2.669M	0.4%	$32.88	+184.3%	COMM	548661107
EMR	Emerson Electric	40,000	$2.669M	0.4%	$40.07	+43.4%	COMM	291011104
JKHY	Jack Henry & Associates	19,295	$2.584M	0.4%	$57.63	+121.6%	COMM	426281101
V	Visa	14,429	$2.504M	0.4%	$83.92	+86.3%	COMM	92826C839
T	AT&T	72,977	$2.445M	0.4%	$12.45	+21.1%	COMM	00206R102
PFE	Pfizer	56,330	$2.44M	0.4%	$17.94	+62.9%	COMM	717081103
NVO	Novo Nordisk ADR	47,300	$2.414M	0.4%	$68.55	—	COMM	670100205
EW	Edwards Lifesciences	12,100	$2.235M	0.3%	$41.96	+44.1%	COMM	28176E108
AMGN	Amgen	11,563	$2.131M	0.3%	$73.61	+98.6%	COMM	031162100
FDX	FedEx	11,296	$1.855M	0.3%	$207.53	-25.4%	COMM	31428X106
MMM	3M Company	10,514	$1.822M	0.3%	$75.07	+60.7%	COMM	88579Y101
FTV	Fortive	21,576	$1.759M	0.3%	$36.66	+37.8%	COMM	34959J108
HP	Helmerich & Payne	33,470	$1.694M	0.3%	$62.85	-12.4%	COMM	423452101
GWW	Grainger, W.W.	6,297	$1.689M	0.3%	$204.51	+26.0%	COMM	384802104
WELL	Welltower	20,625	$1.682M	0.3%	$54.00	+18.5%	COMM	95040Q104
FAST	Fastenal	51,500	$1.678M	0.3%	$11.26	+23.7%	COMM	311900104
DE	Deere & Company	9,929	$1.645M	0.2%	$68.53	+106.4%	COMM	244199105
—	Weingarten Realty	58,398	$1.601M	0.2%	$35.14	—	COMM	948741103
EXPD	Expeditors Int'l	20,774	$1.576M	0.2%	$32.01	+117.3%	COMM	302130109
—	CDK Global	30,382	$1.502M	0.2%	$59.68	—	COMM	12508E101
PPG	PPG Industries	12,457	$1.454M	0.2%	$91.06	+10.2%	COMM	693506107
ISRG	Intuitive Surgical	2,705	$1.419M	0.2%	$101.54	+68.7%	COMM	46120E602
ZTS	Zoetis	12,184	$1.383M	0.2%	$59.74	+66.1%	COMM	98978V103
—	Tiffany	14,650	$1.372M	0.2%	$75.16	—	COMM	886547108
ULTA	Ulta Beauty	3,907	$1.355M	0.2%	$227.63	+51.8%	COMM	90384S303
GILD	Gilead Sciences	20,060	$1.355M	0.2%	$55.92	-9.1%	COMM	375558103
RHHBY	Roche Holding Ltd ADR	38,350	$1.346M	0.2%	$49.05	—	COMM	771195104
IBM	IBM	9,157	$1.263M	0.2%	$118.23	-16.6%	COMM	459200101
EOG	EOG Resources	13,499	$1.258M	0.2%	$60.19	+16.9%	COMM	26875P101
PM	Philip Morris Int'l	15,634	$1.228M	0.2%	$49.72	+17.2%	COMM	718172109
CTSH	Cognizant Technology	19,336	$1.226M	0.2%	$48.24	+23.2%	COMM	192446102
FLO	Flowers Foods	52,275	$1.216M	0.2%	$13.95	+21.1%	COMM	343498101
EPAM	EPAM Systems	6,000	$1.039M	0.2%	$149.89	+14.9%	COMM	29414B104
CSX	CSX	12,156	$941K	0.1%	$6.66	+253.5%	COMM	126408103
BFS	Saul Centers	15,835	$889K	0.1%	$46.35	—	COMM	804395101
—	Celgene	9,390	$868K	0.1%	$102.98	—	COMM	151020104
ROST	Ross Stores	8,205	$813K	0.1%	$38.79	+135.4%	COMM	778296103
CVX	Chevron	6,497	$808K	0.1%	$74.33	+21.4%	COMM	166764100
EQR	Equity Residential Properties	10,220	$776K	0.1%	$31.42	+88.8%	COMM	29476L107
HSY	Hershey Company	5,580	$748K	0.1%	$72.89	+49.5%	COMM	427866108
—	Kellogg	13,600	$729K	0.1%	$38.92	+7.1%	COMM	487836108
BAC	Bank of America	24,102	$699K	0.1%	$23.89	+2.5%	COMM	060505104
HSIC	Henry Schein	9,904	$692K	0.1%	$52.84	+25.1%	COMM	806407102
BMY	Bristol-Myers Squibb	14,536	$659K	0.1%	$45.87	-21.3%	COMM	110122108
—	Raytheon	3,768	$655K	0.1%	$187.85	—	COMM	755111507
TRMB	Trimble	13,835	$624K	0.1%	$29.78	+39.5%	COMM	896239100
—	Marathon Oil	43,588	$619K	0.1%	$13.56	—	COMM	565849106
—	Fortune Brands Home & Security	10,347	$591K	0.1%	$66.64	—	COMM	34964c106
HPQ	HP	27,700	$576K	0.1%	$11.22	+40.1%	COMM	40434L105
ALCO	Alico	17,866	$542K	0.1%	$27.33	-11.7%	COMM	016230104
CVS	CVS Health	9,835	$536K	0.1%	$57.27	-23.9%	COMM	126650100
SHW	Sherwin-Williams	1,165	$534K	0.1%	$136.92	+2.9%	COMM	824348106
JPM	JPMorgan Chase	4,683	$524K	0.1%	$48.47	+89.8%	COMM	46625H100
XRAY	Dentsply Sirona	8,900	$519K	0.1%	$59.08	-9.0%	COMM	24906P109
SLB	Schlumberger	12,896	$512K	0.1%	$55.08	-38.9%	COMM	806857108
HCSG	Healthcare Services Group	16,050	$487K	0.1%	$28.72	+15.1%	COMM	421906108
—	HCP	15,200	$486K	0.1%	$43.65	—	COMM	40414L109
DUK	Duke Energy	5,180	$457K	0.1%	$42.75	+58.5%	COMM	26441C204
NOC	Northrop Grumman	1,366	$441K	0.1%	$122.55	+118.1%	COMM	666807102
—	General Electric	41,354	$434K	0.1%	$17.79	—	COMM	369604103
PGR	Progressive	5,228	$418K	0.1%	$29.31	+116.6%	COMM	743315103
HPE	Hewlett Packard Enterprise	27,700	$414K	0.1%	$6.50	+88.5%	COMM	42824C109
NSC	Norfolk Southern	2,065	$412K	0.1%	$107.13	+61.8%	COMM	655844108
GPC	Genuine Parts	3,885	$402K	0.1%	$62.69	+36.3%	COMM	372460105
TMO	Thermo Fisher Scientific	1,349	$396K	0.1%	$230.43	+17.5%	COMM	883556102
SEIC	SEI Investments	7,000	$393K	0.1%	$26.47	+86.3%	COMM	784117103
CAT	Caterpillar	2,753	$375K	0.1%	$60.35	+90.1%	COMM	149123101
MDLZ	Mondelez Int'l	6,807	$367K	0.1%	$28.45	+55.0%	COMM	609207105
LKQ	LKQ	13,500	$359K	0.1%	$24.16	+4.0%	COMM	501889208
COST	Costco Wholesale	1,359	$359K	0.1%	$142.82	+58.7%	COMM	22160K105
ILMN	Illumina	935	$344K	0.1%	$294.46	+7.2%	COMM	452327109
—	L3 Technologies	1,350	$331K	0.0%	$197.89	—	COMM	502413107
BRK/A	Berkshire Hathaway 'A'	1	$318K	0.0%	$199512.94	+55.8%	COMM	084670108
TECH	Bio-Techne	1,500	$313K	0.0%	$33.97	+44.0%	COMM	09073M104
PYPL	Paypal Holdings	2,640	$302K	0.0%	$94.99	+16.4%	COMM	70450Y103
MO	Altria	6,268	$297K	0.0%	$25.81	+19.8%	COMM	02209S103
ORLY	O'Reilly Automotive	800	$295K	0.0%	$24.19	+4.7%	COMM	67103H107
COP	ConocoPhillips	4,663	$284K	0.0%	$44.54	+10.5%	COMM	20825C104
CMI	Cummins	1,650	$283K	0.0%	$89.89	+53.7%	COMM	231021106
WM	Waste Management	2,450	$283K	0.0%	$78.27	+24.2%	COMM	94106L109
—	Versum Materials	5,178	$267K	0.0%	$50.41	—	COMM	92532W103
FPE	1st Trust Pfd Sec & Inc ETF	13,000	$252K	0.0%	$19.08	—	DEBT	33739E108
—	Stericycle	5,175	$247K	0.0%	$112.40	—	COMM	858912108
INGR	Ingredion	3,000	$247K	0.0%	$80.34	+7.0%	COMM	457187102
ORCL	Oracle	4,254	$242K	0.0%	$37.56	+30.9%	COMM	68389X105
RCL	Royal Caribbean Cruises	2,000	$242K	0.0%	$108.13	+7.8%	COMM	V7780T103
CTAS	Cintas	1,000	$237K	0.0%	$45.33	+14.3%	COMM	172908105
DD	DuPont de Nemours	3,043	$228K	0.0%	$27.24	0.0%	COMM	26614N102
CNMD	Conmed	2,625	$225K	0.0%	$68.36	+13.4%	COMM	207410101
—	Noble Energy	9,900	$222K	0.0%	$24.75	—	COMM	655044105
BKNG	Booking Holdings	118	$221K	0.0%	$1931.02	-8.5%	COMM	09857L108
PSX	Phillips 66	2,296	$215K	0.0%	$65.92	+3.9%	COMM	718546104
KDP	Keurig Dr. Pepper	7,125	$206K	0.0%	$19.52	+24.0%	COMM	49271V100
WY	Weyerhaeuser	7,728	$204K	0.0%	$19.29	+2.1%	COMM	962166104
ALL	Allstate	2,000	$203K	0.0%	$83.49	0.0%	COMM	020002101
KIM	Kimco Realty	10,650	$197K	0.0%	$12.78	+4.4%	COMM	49446R109