Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
ADP	Automatic Data Processing	227,919	$26.71M	4.6%	$45.45	+111.6%	COMM	053015103
MA	Mastercard	174,065	$26.35M	4.5%	$70.99	+100.3%	COMM	57636Q104
SYK	Stryker	131,369	$20.34M	3.5%	$61.57	+126.7%	COMM	863667101
AAPL	Apple	112,512	$19.04M	3.3%	$18.35	+113.0%	COMM	037833100
ECL	Ecolab	137,608	$18.46M	3.2%	$74.34	+63.9%	COMM	278865100
TJX	TJX Companies	225,153	$17.21M	2.9%	$21.46	+51.0%	COMM	872540109
JNJ	Johnson & Johnson	112,114	$15.66M	2.7%	$60.16	+84.5%	COMM	478160104
NKE	NIKE 'B'	250,075	$15.64M	2.7%	$42.11	+23.0%	COMM	654106103
CL	Colgate-Palmolive	199,369	$15.04M	2.6%	$44.45	+35.6%	COMM	194162103
MCD	McDonald's	80,260	$13.81M	2.4%	$71.80	+93.1%	COMM	580135101
MKC	McCormick	123,589	$12.6M	2.2%	$28.42	+50.2%	COMM	579780206
FISV	Fiserv	95,430	$12.51M	2.1%	$26.39	+144.7%	COMM	337738108
KO	Coca-Cola	267,256	$12.26M	2.1%	$27.85	+27.9%	COMM	191216100
CHD	Church & Dwight	233,339	$11.71M	2.0%	$35.05	+20.8%	COMM	171340102
ABT	Abbott Labs	202,757	$11.57M	2.0%	$29.43	+63.5%	COMM	002824100
XOM	ExxonMobil	132,980	$11.12M	1.9%	$53.77	+6.2%	COMM	30231G102
ABBV	AbbVie	113,028	$10.93M	1.9%	$26.55	+151.9%	COMM	00287Y109
MSFT	Microsoft	124,218	$10.63M	1.8%	$26.70	+181.8%	COMM	594918104
PG	Procter & Gamble	108,142	$9.936M	1.7%	$57.11	+27.2%	COMM	742718109
—	Celgene	93,025	$9.708M	1.7%	$102.98	—	COMM	151020104
PEP	PepsiCo	75,651	$9.072M	1.6%	$56.34	+58.0%	COMM	713448108
INTU	Intuit	55,119	$8.697M	1.5%	$57.59	+150.3%	COMM	461202103
FDS	FactSet Research Systems	42,158	$8.126M	1.4%	$93.65	+89.0%	COMM	303075105
NEE	NextEra Energy	51,008	$7.967M	1.4%	$22.50	+40.1%	COMM	65339F101
—	United Technologies	60,636	$7.735M	1.3%	$94.07	—	COMM	913017109
DHR	Danaher	81,585	$7.573M	1.3%	$39.23	+99.4%	COMM	235851102
BF/B	Brown-Forman 'B'	104,551	$7.18M	1.2%	$28.10	+45.8%	COMM	115637209
ITW	Illinois Tool Works	39,030	$6.512M	1.1%	$56.99	+129.6%	COMM	452308109
BR	Broadridge Financial Solutions	71,194	$6.449M	1.1%	$42.94	+77.2%	COMM	11133T103
ACN	Accenture Ltd. 'A'	41,169	$6.303M	1.1%	$81.04	+58.6%	COMM	G1151C101
DIS	Disney, Walt	58,507	$6.29M	1.1%	$88.78	+9.6%	COMM	254687106
AMT	American Tower 'A'	41,133	$5.868M	1.0%	$83.79	+38.1%	COMM	03027X100
GOOGL	Alphabet Class A	5,527	$5.822M	1.0%	$40.94	+25.1%	COMM	02079K305
—	Walgreens Boots Alliance	78,878	$5.728M	1.0%	$76.03	—	COMM	931427108
SBUX	Starbucks	98,804	$5.674M	1.0%	$40.28	+17.7%	COMM	855244109
IDXX	IDEXX Labs	35,461	$5.545M	0.9%	$61.57	+155.6%	COMM	45168D104
SYY	Sysco	89,385	$5.428M	0.9%	$24.84	+84.5%	COMM	871829107
USB	US Bancorp	99,565	$5.335M	0.9%	$24.69	+58.1%	COMM	902973304
MPC	Marathon Petroleum	79,459	$5.243M	0.9%	$37.15	+27.8%	COMM	56585A102
PFF	iShares S&P US Pfd ETF	115,830	$4.41M	0.8%	$39.21	—	DEBT	464288687
BDX	Becton, Dickinson	17,107	$3.662M	0.6%	$127.29	+45.7%	COMM	075887109
PAYX	Paychex	52,275	$3.559M	0.6%	$26.21	+97.0%	COMM	704326107
WSO	Watsco	19,520	$3.319M	0.6%	$148.62	+11.2%	COMM	942622200
QCOM	QUALCOMM	51,270	$3.282M	0.6%	$46.43	+5.5%	COMM	747525103
LLY	Lilly, Eli	38,732	$3.271M	0.6%	$42.21	+78.3%	COMM	532457108
VZ	Verizon Communications	61,753	$3.269M	0.6%	$27.31	+17.0%	COMM	92343V104
EL	Estee Lauder	24,528	$3.121M	0.5%	$76.46	+41.9%	COMM	518439104
WMT	Wal-Mart Stores	30,655	$3.027M	0.5%	$19.98	+34.2%	COMM	931142103
JKHY	Jack Henry & Associates	25,520	$2.985M	0.5%	$57.63	+76.0%	COMM	426281101
APD	Air Products & Chemicals	18,157	$2.979M	0.5%	$61.75	+111.0%	COMM	009158106
BCPC	Balchem	36,500	$2.942M	0.5%	$48.33	+64.2%	COMM	057665200
EMR	Emerson Electric	42,169	$2.939M	0.5%	$39.88	+33.6%	COMM	291011104
CTSH	Cognizant Technology	40,637	$2.886M	0.5%	$45.43	+43.4%	COMM	192446102
BRK/B	Berkshire Hathaway 'B'	14,505	$2.875M	0.5%	$146.39	+29.7%	COMM	084670702
CSCO	Cisco Systems	74,500	$2.853M	0.5%	$15.33	+82.4%	COMM	17275R102
MRK	Merck	50,337	$2.832M	0.5%	$40.51	+6.1%	COMM	58933Y105
T	AT&T	70,575	$2.744M	0.5%	$11.87	+28.5%	COMM	00206R102
HD	Home Depot	14,474	$2.743M	0.5%	$63.71	+122.4%	COMM	437076102
NVO	Novo Nordisk ADR	51,093	$2.742M	0.5%	$68.55	—	COMM	670100205
UNP	Union Pacific	20,391	$2.734M	0.5%	$74.60	+35.1%	COMM	907818108
LOW	Lowe's	28,575	$2.656M	0.5%	$32.88	+116.7%	COMM	548661107
MMM	3M Company	11,233	$2.644M	0.5%	$70.79	+104.8%	COMM	88579Y101
WEX	WEX	18,590	$2.625M	0.4%	$95.29	+31.3%	COMM	96208T104
INTC	Intel	56,096	$2.589M	0.4%	$17.46	+109.4%	COMM	458140100
GILD	Gilead Sciences	35,168	$2.519M	0.4%	$55.92	-0.0%	COMM	375558103
—	CDK Global	34,606	$2.467M	0.4%	$59.68	—	COMM	12508E101
RHHBY	Roche Holding Ltd ADR	76,400	$2.413M	0.4%	$49.05	—	COMM	771195104
HP	Helmerich & Payne	36,120	$2.335M	0.4%	$62.73	-10.6%	COMM	423452101
AMZN	Amazon.com	1,891	$2.211M	0.4%	$13.43	+309.8%	COMM	023135106
—	Weingarten Realty	64,773	$2.129M	0.4%	$35.24	—	COMM	948741103
PFE	Pfizer	58,713	$2.127M	0.4%	$17.79	+33.8%	COMM	717081103
AMGN	Amgen	12,063	$2.098M	0.4%	$73.61	+87.8%	COMM	031162100
PM	Philip Morris Int'l	18,202	$1.923M	0.3%	$49.72	+39.9%	COMM	718172109
HON	Honeywell Int'l	12,525	$1.921M	0.3%	$104.46	+8.5%	COMM	438516106
DE	Deere & Company	10,375	$1.624M	0.3%	$68.53	+80.6%	COMM	244199105
EOG	EOG Resources	14,610	$1.577M	0.3%	$59.23	+27.3%	COMM	26875P101
—	Tiffany	15,175	$1.577M	0.3%	$75.16	—	COMM	886547108
V	Visa	13,776	$1.571M	0.3%	$78.87	+32.4%	COMM	92826C839
GWW	Grainger, W.W.	6,462	$1.527M	0.3%	$204.51	-9.7%	COMM	384802104
FAST	Fastenal	27,750	$1.518M	0.3%	$8.79	+14.2%	COMM	311900104
PPG	PPG Industries	12,457	$1.455M	0.2%	$91.06	+8.7%	COMM	693506107
EXPD	Expeditors Int'l	22,150	$1.433M	0.2%	$31.69	+75.0%	COMM	302130109
XRAY	Dentsply Sirona	21,422	$1.41M	0.2%	$59.08	+7.6%	COMM	24906P109
IBM	IBM	8,975	$1.377M	0.2%	$118.94	-14.2%	COMM	459200101
WELL	Welltower	20,625	$1.315M	0.2%	$54.00	-6.7%	COMM	95040Q104
—	General Electric	73,602	$1.284M	0.2%	$23.44	—	COMM	369604103
—	Stericycle	18,632	$1.267M	0.2%	$112.40	—	COMM	858912108
CVS	CVS Health	17,400	$1.262M	0.2%	$57.13	-1.6%	COMM	126650100
HSIC	Henry Schein	17,542	$1.226M	0.2%	$52.84	+9.8%	COMM	806407102
SLB	Schlumberger	17,781	$1.198M	0.2%	$55.08	-7.0%	COMM	806857108
FLO	Flowers Foods	57,750	$1.115M	0.2%	$13.95	-0.3%	COMM	343498101
FTV	Fortive	15,135	$1.095M	0.2%	$32.22	+37.5%	COMM	34959J108
BMY	Bristol-Myers Squibb	17,736	$1.087M	0.2%	$45.87	+1.3%	COMM	110122108
D	Dominion Energy	13,347	$1.082M	0.2%	$34.53	+63.4%	COMM	25746U109
ISRG	Intuitive Surgical	2,895	$1.057M	0.2%	$101.54	+23.2%	COMM	46120E602
ROST	Ross Stores	12,560	$1.008M	0.2%	$38.79	+66.3%	COMM	778296103
—	Dr. Pepper Snapple	10,100	$980K	0.2%	$50.59	—	COMM	26138E109
—	Praxair	6,270	$970K	0.2%	$116.25	—	COMM	74005P104
—	Kellogg	13,900	$945K	0.2%	$38.92	+14.9%	COMM	487836108
TSCO	Tractor Supply Company	12,280	$918K	0.2%	$15.06	-24.8%	COMM	892356106
BFS	Saul Centers	14,835	$916K	0.2%	$46.29	—	COMM	804395101
ULTA	Ulta Beauty	4,085	$914K	0.2%	$211.83	-0.1%	COMM	90384S303
FDX	FedEx	3,555	$887K	0.2%	$188.45	+5.6%	COMM	31428X106
HSY	Hershey Company	6,785	$770K	0.1%	$72.44	+25.1%	COMM	427866108
HCSG	Healthcare Services Group	14,200	$749K	0.1%	$26.62	+96.9%	COMM	421906108
—	Marathon Oil	44,260	$749K	0.1%	$13.56	—	COMM	565849106
ZTS	Zoetis	10,300	$742K	0.1%	$53.45	+20.6%	COMM	98978V103
EW	Edwards Lifesciences	6,550	$738K	0.1%	$37.14	-1.2%	COMM	28176E108
—	Fortune Brands Home & Security	10,347	$708K	0.1%	$67.27	—	COMM	34964c106
CVX	Chevron	5,557	$696K	0.1%	$69.63	+20.0%	COMM	166764100
—	Raytheon	3,653	$686K	0.1%	$186.70	—	COMM	755111507
EQR	Equity Residential Properties	10,720	$684K	0.1%	$31.42	+57.0%	COMM	29476L107
CSX	CSX	12,156	$669K	0.1%	$6.66	+138.1%	COMM	126408103
—	DowDupont	8,923	$635K	0.1%	$69.26	—	COMM	26078J100
HPQ	HP	27,700	$582K	0.1%	$11.22	+44.8%	COMM	40434L105
CAT	Caterpillar	3,553	$560K	0.1%	$60.35	+92.7%	COMM	149123101
TRMB	Trimble	13,760	$559K	0.1%	$29.78	+37.6%	COMM	896239100
JPM	JPMorgan Chase	4,943	$529K	0.1%	$45.09	+80.4%	COMM	46625H100
ALCO	Alico	17,866	$527K	0.1%	$27.33	+1.8%	COMM	016230104
SEIC	SEI Investments	7,000	$503K	0.1%	$26.47	+127.4%	COMM	784117103
—	HCP	19,000	$496K	0.1%	$43.65	—	COMM	40414L109
MNST	Monster Beverage	7,264	$460K	0.1%	$23.31	+28.5%	COMM	61174X109
DUK	Duke Energy	5,180	$436K	0.1%	$42.75	+46.5%	COMM	26441C204
PRAA	PRA Group	12,650	$420K	0.1%	$34.09	-6.9%	COMM	69354N106
INGR	Ingredion	3,000	$419K	0.1%	$80.34	+64.3%	COMM	457187102
MO	Altria	5,833	$417K	0.1%	$24.45	+49.8%	COMM	02209S103
—	WGL Holdings	4,717	$405K	0.1%	$61.55	—	COMM	92924F106
HPE	Hewlett Packard Enterprise	27,700	$398K	0.1%	$6.50	+70.0%	COMM	42824C109
NOC	Northrop Grumman	1,282	$393K	0.1%	$114.24	+130.2%	COMM	666807102
STT	State Street	3,899	$381K	0.1%	$57.63	+29.1%	COMM	857477103
GPC	Genuine Parts	3,885	$369K	0.1%	$62.69	+15.0%	COMM	372460105
—	Aetna	2,000	$361K	0.1%	$127.00	—	COMM	00817Y108
KHC	Kraft Heinz	4,538	$353K	0.1%	$48.53	+10.0%	COMM	500754106
MDLZ	Mondelez Int'l	7,907	$338K	0.1%	$28.45	+21.2%	COMM	609207105
—	Time Warner New	3,610	$330K	0.1%	$87.19	—	COMM	887317303
COP	ConocoPhillips	5,935	$326K	0.1%	$42.95	-7.7%	COMM	20825C104
WY	Weyerhaeuser	9,088	$320K	0.1%	$18.65	+38.0%	COMM	962166104
GOOG	Alphabet Class C	305	$319K	0.1%	$35.61	+41.9%	COMM	02079K107
CMI	Cummins	1,700	$300K	0.1%	$89.89	+53.8%	COMM	231021106
BRK/A	Berkshire Hathaway 'A'	1	$298K	0.1%	$199512.94	+42.7%	COMM	084670108
PGR	Progressive	5,200	$293K	0.1%	$29.31	+36.3%	COMM	743315103
—	Noble Energy	9,900	$288K	0.0%	$60.00	—	COMM	655044105
—	L3 Technologies	1,425	$282K	0.0%	$197.89	—	COMM	502413107
NSC	Norfolk Southern	1,755	$254K	0.0%	$102.71	+11.0%	COMM	655844108
PSX	Phillips 66	2,478	$251K	0.0%	$61.25	+13.1%	COMM	718546104
VFC	VF Corporation	3,365	$249K	0.0%	$61.34	+7.7%	COMM	918204108
SU	Suncor Energy	6,750	$249K	0.0%	$23.36	+9.7%	COMM	867224107
COST	Costco Wholesale	1,314	$245K	0.0%	$140.12	+10.2%	COMM	22160K105
KIM	Kimco Realty	12,650	$230K	0.0%	$12.78	-2.5%	COMM	49446R109
—	The Priceline Group	131	$228K	0.0%	$1858.56	—	COMM	741503403
DXC	DXC Technology	2,379	$226K	0.0%	$67.37	+14.1%	COMM	23355L106
CTAS	Cintas	1,400	$218K	0.0%	$30.49	+14.9%	COMM	172908105
ORCL	Oracle	4,568	$216K	0.0%	$37.03	+17.4%	COMM	68389X105
WM	Waste Management	2,450	$211K	0.0%	$65.63	+7.8%	COMM	94106L109
ALL	Allstate	2,000	$209K	0.0%	$81.75	0.0%	COMM	020002101
LRLCY	L'Oreal ADR	4,650	$206K	0.0%	$44.30	—	COMM	502117203