Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
MA	Mastercard	158,416	$27.75M	5.0%	$70.99	+130.6%	COMM	57636Q104
ADP	Automatic Data Processing	215,669	$24.47M	4.4%	$45.45	+117.0%	COMM	053015103
SYK	Stryker	125,184	$20.14M	3.6%	$61.57	+140.2%	COMM	863667101
ECL	Ecolab	129,213	$17.71M	3.2%	$74.34	+66.2%	COMM	278865100
TJX	TJX Companies	213,403	$17.41M	3.1%	$21.46	+65.3%	COMM	872540109
AAPL	Apple	102,412	$17.18M	3.1%	$18.35	+120.3%	COMM	037833100
NKE	NIKE 'B'	226,335	$15.04M	2.7%	$42.11	+41.6%	COMM	654106103
JNJ	Johnson & Johnson	113,209	$14.51M	2.6%	$60.16	+80.1%	COMM	478160104
MCD	McDonald's	79,930	$12.5M	2.3%	$71.80	+90.3%	COMM	580135101
MKC	McCormick	116,014	$12.34M	2.2%	$28.42	+59.3%	COMM	579780206
FISV	Fiserv	172,030	$12.27M	2.2%	$45.95	+53.0%	COMM	337738108
ABT	Abbott Labs	198,124	$11.87M	2.1%	$29.43	+78.6%	COMM	002824100
CL	Colgate-Palmolive	156,614	$11.23M	2.0%	$44.45	+34.4%	COMM	194162103
MSFT	Microsoft	122,893	$11.22M	2.0%	$26.70	+215.7%	COMM	594918104
CHD	Church & Dwight	213,993	$10.78M	1.9%	$35.05	+27.4%	COMM	171340102
ABBV	AbbVie	112,405	$10.64M	1.9%	$26.55	+195.8%	COMM	00287Y109
KO	Coca-Cola	236,638	$10.28M	1.9%	$27.85	+25.9%	COMM	191216100
XOM	ExxonMobil	132,506	$9.886M	1.8%	$53.77	+3.7%	COMM	30231G102
NEE	NextEra Energy	51,673	$8.44M	1.5%	$22.62	+40.1%	COMM	65339F101
PG	Procter & Gamble	104,727	$8.303M	1.5%	$57.11	+18.8%	COMM	742718109
INTU	Intuit	47,389	$8.215M	1.5%	$57.59	+176.9%	COMM	461202103
FDS	FactSet Research Systems	38,898	$7.757M	1.4%	$93.65	+99.5%	COMM	303075105
—	Celgene	86,090	$7.68M	1.4%	$102.98	—	COMM	151020104
DHR	Danaher	75,540	$7.396M	1.3%	$39.23	+114.8%	COMM	235851102
PEP	PepsiCo	67,300	$7.346M	1.3%	$56.34	+58.4%	COMM	713448108
BR	Broadridge Financial Solutions	66,134	$7.254M	1.3%	$42.94	+102.5%	COMM	11133T103
—	United Technologies	55,136	$6.937M	1.2%	$94.07	—	COMM	913017109
BF/B	Brown-Forman 'B'	127,098	$6.914M	1.2%	$31.42	+49.1%	COMM	115637209
ITW	Illinois Tool Works	38,250	$5.992M	1.1%	$56.99	+140.1%	COMM	452308109
AMT	American Tower	41,059	$5.968M	1.1%	$83.79	+37.0%	COMM	03027X100
PFF	iShares S&P US Pfd ETF	158,255	$5.944M	1.1%	$38.77	—	DEBT	464288687
DIS	Disney, Walt	58,730	$5.899M	1.1%	$88.78	+13.7%	COMM	254687106
ACN	Accenture Ltd. 'A'	38,319	$5.882M	1.1%	$81.04	+73.7%	COMM	G1151C101
IDXX	IDEXX Labs	30,048	$5.751M	1.0%	$61.57	+199.7%	COMM	45168D104
MPC	Marathon Petroleum	77,879	$5.694M	1.0%	$37.15	+44.7%	COMM	56585A102
SYY	Sysco	88,035	$5.279M	1.0%	$24.84	+98.3%	COMM	871829107
SBUX	Starbucks	89,349	$5.172M	0.9%	$40.28	+20.9%	COMM	855244109
GOOGL	Alphabet Class A	4,900	$5.082M	0.9%	$40.94	+34.4%	COMM	02079K305
USB	US Bancorp	97,892	$4.944M	0.9%	$24.69	+61.7%	COMM	902973304
—	Walgreens Boots Alliance	70,863	$4.639M	0.8%	$76.03	—	COMM	931427108
BDX	Becton, Dickinson	20,315	$4.402M	0.8%	$137.91	+41.1%	COMM	075887109
WSO	Watsco	20,195	$3.655M	0.7%	$149.45	+16.0%	COMM	942622200
PAYX	Paychex	52,300	$3.221M	0.6%	$26.21	+99.8%	COMM	704326107
EL	Estee Lauder	21,278	$3.186M	0.6%	$76.46	+64.1%	COMM	518439104
CSCO	Cisco Systems	74,206	$3.183M	0.6%	$15.33	+118.2%	COMM	17275R102
HD	Home Depot	17,175	$3.061M	0.6%	$78.02	+98.3%	COMM	437076102
LLY	Lilly, Eli	38,898	$3.01M	0.5%	$42.21	+69.9%	COMM	532457108
CTSH	Cognizant Technology	36,502	$2.938M	0.5%	$45.43	+55.4%	COMM	192446102
VZ	Verizon Communications	61,345	$2.934M	0.5%	$27.31	+20.9%	COMM	92343V104
INTC	Intel	56,213	$2.928M	0.5%	$17.46	+129.5%	COMM	458140100
EMR	Emerson Electric	42,602	$2.91M	0.5%	$40.07	+47.2%	COMM	291011104
APD	Air Products & Chemicals	18,157	$2.888M	0.5%	$61.75	+119.8%	COMM	009158106
BRK/B	Berkshire Hathaway 'B'	14,305	$2.854M	0.5%	$146.39	+40.3%	COMM	084670702
BCPC	Balchem	34,810	$2.846M	0.5%	$48.33	+56.0%	COMM	057665200
WEX	WEX	17,955	$2.812M	0.5%	$95.29	+57.7%	COMM	96208T104
QCOM	QUALCOMM	50,370	$2.791M	0.5%	$46.43	+11.8%	COMM	747525103
WMT	Walmart	31,188	$2.775M	0.5%	$20.13	+40.8%	COMM	931142103
AMZN	Amazon.com	1,891	$2.737M	0.5%	$13.43	+432.6%	COMM	023135106
HON	Honeywell Int'l	18,840	$2.723M	0.5%	$108.83	+8.0%	COMM	438516106
MRK	Merck	47,984	$2.614M	0.5%	$40.51	+4.3%	COMM	58933Y105
UNP	Union Pacific	19,441	$2.613M	0.5%	$74.60	+51.6%	COMM	907818108
LOW	Lowe's	28,575	$2.507M	0.5%	$32.88	+149.1%	COMM	548661107
T	AT&T	70,175	$2.502M	0.5%	$11.87	+33.2%	COMM	00206R102
MMM	3M Company	11,334	$2.488M	0.4%	$70.79	+112.1%	COMM	88579Y101
JKHY	Jack Henry & Associates	20,520	$2.482M	0.4%	$57.63	+92.2%	COMM	426281101
NVO	Novo Nordisk ADR	49,693	$2.447M	0.4%	$68.55	—	COMM	670100205
FDX	FedEx	10,110	$2.428M	0.4%	$209.24	+5.4%	COMM	31428X106
GILD	Gilead Sciences	31,818	$2.399M	0.4%	$55.92	+5.4%	COMM	375558103
HP	Helmerich & Payne	35,320	$2.351M	0.4%	$62.73	+7.5%	COMM	423452101
—	CDK Global	33,732	$2.137M	0.4%	$59.68	—	COMM	12508E101
AMGN	Amgen	11,964	$2.04M	0.4%	$73.61	+96.2%	COMM	031162100
PFE	Pfizer	56,250	$1.996M	0.4%	$17.79	+36.3%	COMM	717081103
GWW	Grainger, W.W.	6,462	$1.824M	0.3%	$204.51	+14.9%	COMM	384802104
—	Weingarten Realty	64,823	$1.82M	0.3%	$35.24	—	COMM	948741103
PM	Philip Morris Int'l	18,159	$1.805M	0.3%	$49.72	+38.2%	COMM	718172109
DE	Deere & Company	10,275	$1.596M	0.3%	$68.53	+110.1%	COMM	244199105
V	Visa	13,226	$1.582M	0.3%	$78.87	+45.5%	COMM	92826C839
FAST	Fastenal	27,850	$1.52M	0.3%	$8.79	+27.7%	COMM	311900104
—	Tiffany	15,025	$1.467M	0.3%	$75.16	—	COMM	886547108
EXPD	Expeditors Int'l	22,424	$1.419M	0.3%	$32.01	+82.5%	COMM	302130109
EOG	EOG Resources	13,260	$1.396M	0.3%	$59.23	+36.5%	COMM	26875P101
PPG	PPG Industries	12,457	$1.39M	0.3%	$91.06	+9.3%	COMM	693506107
FTV	Fortive	17,877	$1.386M	0.2%	$34.35	+34.2%	COMM	34959J108
IBM	IBM	8,975	$1.377M	0.2%	$118.94	-9.8%	COMM	459200101
RHHBY	Roche Holding Ltd ADR	46,700	$1.337M	0.2%	$49.05	—	COMM	771195104
EW	Edwards Lifesciences	9,185	$1.281M	0.2%	$38.94	+11.5%	COMM	28176E108
FLO	Flowers Foods	57,750	$1.262M	0.2%	$13.95	+5.7%	COMM	343498101
ISRG	Intuitive Surgical	2,820	$1.164M	0.2%	$101.54	+37.4%	COMM	46120E602
SLB	Schlumberger	17,781	$1.152M	0.2%	$55.08	+1.2%	COMM	806857108
WELL	Welltower	20,625	$1.123M	0.2%	$54.00	-20.4%	COMM	95040Q104
BMY	Bristol-Myers Squibb	17,636	$1.115M	0.2%	$45.87	+4.8%	COMM	110122108
—	Dr. Pepper Snapple	8,975	$1.062M	0.2%	$50.59	—	COMM	26138E109
CVS	CVS Health	16,362	$1.018M	0.2%	$57.13	-2.2%	COMM	126650100
XRAY	Dentsply Sirona	19,022	$957K	0.2%	$59.08	-0.3%	COMM	24906P109
ZTS	Zoetis	10,875	$908K	0.2%	$54.54	+35.8%	COMM	98978V103
—	Kellogg	13,900	$904K	0.2%	$38.92	+21.4%	COMM	487836108
HSIC	Henry Schein	12,904	$867K	0.2%	$52.84	+4.8%	COMM	806407102
—	General Electric	62,165	$838K	0.2%	$23.44	—	COMM	369604103
—	Raytheon	3,653	$788K	0.1%	$186.70	—	COMM	755111507
BFS	Saul Centers	14,835	$756K	0.1%	$46.29	—	COMM	804395101
ROST	Ross Stores	9,160	$714K	0.1%	$38.79	+89.0%	COMM	778296103
—	Marathon Oil	44,260	$714K	0.1%	$13.56	—	COMM	565849106
—	Stericycle	11,822	$692K	0.1%	$112.40	—	COMM	858912108
HSY	Hershey Company	6,895	$682K	0.1%	$72.65	+17.9%	COMM	427866108
CSX	CSX	12,156	$677K	0.1%	$6.66	+152.2%	COMM	126408103
EQR	Equity Residential Properties	10,720	$661K	0.1%	$31.42	+40.8%	COMM	29476L107
HCSG	Healthcare Services Group	15,100	$657K	0.1%	$27.95	+75.1%	COMM	421906108
CVX	Chevron	5,617	$641K	0.1%	$69.79	+21.8%	COMM	166764100
ULTA	Ulta Beauty	3,130	$639K	0.1%	$211.83	+2.2%	COMM	90384S303
—	Fortune Brands Home & Security	10,347	$609K	0.1%	$67.27	—	COMM	34964c106
HPQ	HP	27,700	$607K	0.1%	$11.22	+54.7%	COMM	40434L105
JPM	JPMorgan Chase	5,332	$586K	0.1%	$48.47	+88.6%	COMM	46625H100
—	DowDupont	8,923	$568K	0.1%	$69.26	—	COMM	26078J100
CAT	Caterpillar	3,553	$524K	0.1%	$60.35	+120.5%	COMM	149123101
SEIC	SEI Investments	7,000	$524K	0.1%	$26.47	+153.9%	COMM	784117103
TRMB	Trimble	13,760	$494K	0.1%	$29.78	+35.3%	COMM	896239100
HPE	Hewlett Packard Enterprise	27,700	$486K	0.1%	$6.50	+104.3%	COMM	42824C109
ALCO	Alico	17,866	$486K	0.1%	$27.33	-14.1%	COMM	016230104
PRAA	PRA Group	12,350	$469K	0.1%	$34.09	+7.0%	COMM	69354N106
NOC	Northrop Grumman	1,282	$448K	0.1%	$114.24	+157.6%	COMM	666807102
—	HCP	19,000	$441K	0.1%	$43.65	—	COMM	40414L109
DUK	Duke Energy	5,180	$401K	0.1%	$42.75	+31.1%	COMM	26441C204
TSCO	Tractor Supply Company	6,355	$400K	0.1%	$15.06	-18.1%	COMM	892356106
—	WGL Holdings	4,717	$395K	0.1%	$61.55	—	COMM	92924F106
INGR	Ingredion	3,000	$387K	0.1%	$80.34	+66.5%	COMM	457187102
MO	Altria	5,800	$361K	0.1%	$24.45	+49.5%	COMM	02209S103
GPC	Genuine Parts	3,885	$349K	0.1%	$62.69	+22.6%	COMM	372460105
—	Time Warner New	3,610	$341K	0.1%	$87.19	—	COMM	887317303
—	Aetna	2,000	$338K	0.1%	$127.00	—	COMM	00817Y108
MDLZ	Mondelez Int'l	7,907	$330K	0.1%	$28.45	+26.0%	COMM	609207105
PGR	Progressive	5,200	$317K	0.1%	$29.31	+52.6%	COMM	743315103
STT	State Street	3,099	$309K	0.1%	$57.63	+42.2%	COMM	857477103
NSC	Norfolk Southern	2,255	$306K	0.1%	$107.13	+14.5%	COMM	655844108
—	Noble Energy	9,900	$300K	0.1%	$60.00	—	COMM	655044105
BRK/A	Berkshire Hathaway 'A'	1	$299K	0.1%	$199512.94	+54.5%	COMM	084670108
WY	Weyerhaeuser	8,448	$296K	0.1%	$18.65	+38.9%	COMM	962166104
BKNG	Booking Holdings	141	$293K	0.1%	$1933.58	0.0%	COMM	09857L108
—	L3 Technologies	1,350	$281K	0.1%	$197.89	—	COMM	502413107
COP	ConocoPhillips	4,703	$279K	0.1%	$42.95	+1.9%	COMM	20825C104
CMI	Cummins	1,700	$276K	0.0%	$89.89	+55.5%	COMM	231021106
KHC	Kraft Heinz	4,408	$275K	0.0%	$48.53	+0.9%	COMM	500754106
—	Praxair	1,745	$252K	0.0%	$116.25	—	COMM	74005P104
COST	Costco Wholesale	1,314	$248K	0.0%	$140.12	+20.8%	COMM	22160K105
CTAS	Cintas	1,400	$239K	0.0%	$30.49	+25.9%	COMM	172908105
DXC	DXC Technology	2,379	$239K	0.0%	$67.37	+23.8%	COMM	23355L106
SU	Suncor Energy	6,750	$233K	0.0%	$23.36	+10.8%	COMM	867224107
TECH	Bio-Techne	1,500	$227K	0.0%	$33.97	0.0%	COMM	09073M104
ORCL	Oracle	4,901	$224K	0.0%	$37.52	+17.9%	COMM	68389X105
PSX	Phillips 66	2,212	$212K	0.0%	$61.25	+16.7%	COMM	718546104
ADI	Analog Devices	2,322	$212K	0.0%	$78.62	0.0%	COMM	032654105
LRLCY	L'Oreal ADR	4,650	$210K	0.0%	$44.30	—	COMM	502117203
WM	Waste Management	2,450	$206K	0.0%	$65.63	+14.1%	COMM	94106L109
KIM	Kimco Realty	12,650	$182K	0.0%	$12.78	-18.6%	COMM	49446R109