Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
ADP	Automatic Data Processing	246,046	$25.21M	4.7%	$45.45	+85.3%	COMM	053015103
MA	Mastercard	178,392	$21.67M	4.1%	$70.99	+59.3%	COMM	57636Q104
SYK	Stryker	135,740	$18.84M	3.5%	$61.57	+102.6%	COMM	863667101
ECL	Ecolab	139,728	$18.55M	3.5%	$74.34	+58.3%	COMM	278865100
TJX	TJX Companies	223,393	$16.12M	3.0%	$21.34	+56.5%	COMM	872540109
AAPL	Apple	111,882	$16.11M	3.0%	$18.35	+87.0%	COMM	037833100
CL	Colgate-Palmolive	208,459	$15.45M	2.9%	$44.45	+36.4%	COMM	194162103
JNJ	Johnson & Johnson	115,719	$15.31M	2.9%	$60.16	+66.9%	COMM	478160104
NKE	NIKE 'B'	251,175	$14.82M	2.8%	$42.01	+14.8%	COMM	654106103
KO	Coca-Cola	313,311	$14.05M	2.6%	$27.85	+20.9%	COMM	191216100
MCD	McDonald's	83,999	$12.87M	2.4%	$71.80	+64.2%	COMM	580135101
CHD	Church & Dwight	235,961	$12.24M	2.3%	$35.05	+30.7%	COMM	171340102
MKC	McCormick & Co.	123,825	$12.07M	2.3%	$28.42	+51.0%	COMM	579780206
XOM	ExxonMobil	143,406	$11.58M	2.2%	$53.77	+3.2%	COMM	30231G102
—	Celgene	89,000	$11.56M	2.2%	$101.18	—	COMM	151020104
FISV	Fiserv	93,140	$11.39M	2.1%	$25.30	+139.1%	COMM	337738108
ABT	Abbott Labs	210,794	$10.25M	1.9%	$29.43	+32.2%	COMM	002824100
PEP	PepsiCo	80,292	$9.273M	1.7%	$56.34	+56.5%	COMM	713448108
MSFT	Microsoft	129,168	$8.904M	1.7%	$26.70	+133.4%	COMM	594918104
PG	Procter & Gamble	101,678	$8.861M	1.7%	$55.18	+27.1%	COMM	742718109
ABBV	AbbVie	119,910	$8.695M	1.6%	$26.55	+76.9%	COMM	00287Y109
—	United Technologies	62,660	$7.651M	1.4%	$94.07	—	COMM	913017109
INTU	Intuit	54,998	$7.304M	1.4%	$57.59	+111.9%	COMM	461202103
—	Walgreens Boots Alliance	92,318	$7.229M	1.4%	$76.03	—	COMM	931427108
FDS	FactSet Research Systems	42,626	$7.084M	1.3%	$93.65	+60.0%	COMM	303075105
IDXX	IDEXX Labs	37,516	$6.056M	1.1%	$61.57	+163.7%	COMM	45168D104
DHR	Danaher	69,500	$5.865M	1.1%	$33.39	+114.9%	COMM	235851102
NEE	NextEra Energy	40,463	$5.67M	1.1%	$20.60	+33.7%	COMM	65339F101
DIS	Disney, Walt	53,062	$5.638M	1.1%	$87.93	+16.5%	COMM	254687106
SBUX	Starbucks	93,734	$5.466M	1.0%	$39.95	+25.7%	COMM	855244109
USB	US Bancorp	103,015	$5.349M	1.0%	$24.69	+49.7%	COMM	902973304
BF/B	Brown-Forman 'B'	108,644	$5.28M	1.0%	$28.10	+19.2%	COMM	115637209
ITW	Illinois Tool Works	36,422	$5.217M	1.0%	$50.91	+122.6%	COMM	452308109
ACN	Accenture Ltd. 'A'	41,779	$5.167M	1.0%	$80.68	+32.8%	COMM	G1151C101
BR	Broadridge Financial Solutions	65,273	$4.932M	0.9%	$40.72	+53.2%	COMM	11133T103
GOOGL	Alphabet Inc. Class A	5,022	$4.669M	0.9%	$40.23	+15.4%	COMM	02079K305
SYY	Sysco Corp.	92,357	$4.648M	0.9%	$24.84	+71.7%	COMM	871829107
AMT	American Tower 'A'	32,888	$4.352M	0.8%	$76.37	+34.7%	COMM	03027X100
PFF	iShares S&P US Pfd	110,580	$4.331M	0.8%	$39.38	—	DEBT	464288687
LLY	Lilly, Eli	40,766	$3.355M	0.6%	$42.21	+68.9%	COMM	532457108
RHHBY	Roche Holding Ltd ADR	101,850	$3.239M	0.6%	$49.05	—	COMM	771195104
PAYX	Paychex	54,725	$3.116M	0.6%	$26.21	+73.3%	COMM	704326107
MRK	Merck	47,529	$3.046M	0.6%	$40.15	+15.9%	COMM	58933Y105
GILD	Gilead Sciences	41,908	$2.966M	0.6%	$55.92	-13.6%	COMM	375558103
QCOM	QUALCOMM	52,188	$2.882M	0.5%	$46.43	-4.7%	COMM	747525103
BCPC	Balchem	36,425	$2.831M	0.5%	$48.33	+57.2%	COMM	057665200
JKHY	Jack Henry & Associates	26,570	$2.76M	0.5%	$57.63	+56.4%	COMM	426281101
APD	Air Products & Chemicals	19,007	$2.719M	0.5%	$61.75	+86.0%	COMM	009158106
VZ	Verizon Communications	60,853	$2.718M	0.5%	$27.25	+8.4%	COMM	92343V104
T	AT&T	71,925	$2.714M	0.5%	$11.82	+34.8%	COMM	00206R102
CVS	CVS Health	31,915	$2.568M	0.5%	$57.13	+5.6%	COMM	126650100
MMM	3M Company	12,318	$2.564M	0.5%	$69.86	+78.5%	COMM	88579Y101
EMR	Emerson Electric	42,994	$2.563M	0.5%	$39.77	+20.7%	COMM	291011104
—	CDK Global Inc.	40,346	$2.504M	0.5%	$59.68	—	COMM	12508E101
BRK/B	Berkshire Hathaway 'B'	14,695	$2.489M	0.5%	$146.01	+13.9%	COMM	084670702
CTSH	Cognizant Technology	37,437	$2.486M	0.5%	$43.83	+28.7%	COMM	192446102
WMT	Wal-Mart Stores	31,490	$2.383M	0.4%	$19.98	+10.2%	COMM	931142103
CSCO	Cisco Systems	75,971	$2.378M	0.4%	$15.33	+63.4%	COMM	17275R102
—	Weingarten Realty	77,623	$2.336M	0.4%	$35.24	—	COMM	948741103
LOW	Lowe's	29,798	$2.31M	0.4%	$32.88	+112.0%	COMM	548661107
EL	Estee Lauder	23,903	$2.294M	0.4%	$75.99	+8.4%	COMM	518439104
PM	Philip Morris Int'l	19,407	$2.279M	0.4%	$49.72	+49.4%	COMM	718172109
—	Stericycle	29,732	$2.269M	0.4%	$112.40	—	COMM	858912108
NVO	Novo Nordisk ADR	52,461	$2.25M	0.4%	$68.55	—	COMM	670100205
UNP	Union Pacific	20,621	$2.246M	0.4%	$74.60	+20.8%	COMM	907818108
—	General Electric	80,900	$2.185M	0.4%	$23.32	—	COMM	369604103
AMGN	Amgen	12,500	$2.153M	0.4%	$73.61	+70.3%	COMM	031162100
HP	Helmerich & Payne	37,372	$2.031M	0.4%	$62.73	-6.5%	COMM	423452101
HD	Home Depot	13,143	$2.016M	0.4%	$56.37	+120.8%	COMM	437076102
WSO	Watsco	12,705	$1.959M	0.4%	$145.52	-1.8%	COMM	942622200
INTC	Intel	57,171	$1.929M	0.4%	$17.46	+69.4%	COMM	458140100
MPC	Marathon Petroleum	36,691	$1.92M	0.4%	$32.29	+22.4%	COMM	56585A102
—	Praxair	14,375	$1.905M	0.4%	$116.25	—	COMM	74005P104
WEX	WEX	18,215	$1.899M	0.4%	$94.77	+8.6%	COMM	96208T104
AMZN	Amazon.com	1,961	$1.898M	0.4%	$13.43	+255.3%	COMM	023135106
BDX	Becton, Dickinson	8,516	$1.662M	0.3%	$82.75	+94.0%	COMM	075887109
HSIC	Henry Schein	8,971	$1.642M	0.3%	$38.13	+82.7%	COMM	806407102
IBM	IBM	10,574	$1.627M	0.3%	$118.94	-12.8%	COMM	459200101
PFE	Pfizer	46,691	$1.568M	0.3%	$16.61	+30.1%	COMM	717081103
XRAY	Dentsply Sirona	23,814	$1.544M	0.3%	$59.08	+6.9%	COMM	24906P109
WELL	Welltower, Inc.	20,425	$1.529M	0.3%	$54.00	-0.8%	COMM	95040Q104
GWW	Grainger, W.W.	8,162	$1.473M	0.3%	$204.51	-18.8%	COMM	384802104
—	Tiffany	15,240	$1.431M	0.3%	$75.16	—	COMM	886547108
EXPD	Expeditors Int'l	23,950	$1.353M	0.3%	$31.69	+56.0%	COMM	302130109
EOG	EOG Resources	14,310	$1.295M	0.2%	$58.89	+16.6%	COMM	26875P101
DE	Deere & Company	10,250	$1.267M	0.2%	$68.04	+51.0%	COMM	244199105
TSCO	Tractor Supply Company	22,530	$1.221M	0.2%	$15.06	-30.9%	COMM	892356106
FAST	Fastenal	27,750	$1.208M	0.2%	$8.79	+2.0%	COMM	311900104
FLO	Flowers Foods	66,500	$1.151M	0.2%	$13.95	-4.3%	COMM	343498101
SLB	Schlumberger	16,356	$1.077M	0.2%	$55.37	+0.8%	COMM	806857108
V	Visa	11,151	$1.046M	0.2%	$74.18	+17.9%	COMM	92826C839
—	Kellogg	14,700	$1.021M	0.2%	$38.92	+26.2%	COMM	487836108
D	Dominion Energy	13,260	$1.016M	0.2%	$34.53	+55.6%	COMM	25746U109
ISRG	Intuitive Surgical	965	$903K	0.2%	$54.33	+76.9%	COMM	46120E602
—	Panera Bread	2,821	$888K	0.2%	$184.71	—	COMM	69840W108
BFS	Saul Centers	15,130	$877K	0.2%	$46.29	—	COMM	804395101
BMY	Bristol-Myers Squibb	15,611	$870K	0.2%	$45.92	-13.1%	COMM	110122108
FTV	Fortive	13,685	$867K	0.2%	$31.00	+22.6%	COMM	34959J108
—	Dr. Pepper Snapple	9,475	$863K	0.2%	$47.79	—	COMM	26138E109
HSY	Hershey Company	6,895	$740K	0.1%	$71.62	+25.4%	COMM	427866108
EQR	Equity Residential Properties	10,720	$706K	0.1%	$31.42	+51.6%	COMM	29476L107
GPC	Genuine Parts	7,460	$692K	0.1%	$62.69	+14.0%	COMM	372460105
ROST	Ross Stores	11,875	$686K	0.1%	$37.83	+51.4%	COMM	778296103
HCSG	Healthcare Services Group	14,200	$665K	0.1%	$26.62	+73.6%	COMM	421906108
CSX	CSX Corp.	12,056	$658K	0.1%	$6.66	+128.6%	COMM	126408103
—	HCP Inc.	19,200	$614K	0.1%	$43.98	—	COMM	40414L109
PRAA	PRA Group	16,175	$613K	0.1%	$34.09	+2.2%	COMM	69354N106
CVX	Chevron	5,415	$565K	0.1%	$69.46	+5.4%	COMM	166764100
TRMB	Trimble Inc.	14,560	$519K	0.1%	$29.78	+16.5%	COMM	896239100
ZTS	Zoetis	8,000	$499K	0.1%	$51.37	+7.6%	COMM	98978V103
HPQ	HP Inc.	27,700	$484K	0.1%	$11.22	+23.2%	COMM	40434L105
HPE	Hewlett Packard Enterprise	27,700	$460K	0.1%	$6.50	+65.1%	COMM	42824C109
KHC	Kraft Heinz	5,108	$437K	0.1%	$48.53	+25.2%	COMM	500754106
MO	Altria	5,833	$434K	0.1%	$24.45	+60.7%	COMM	02209S103
JPM	JPMorgan Chase	4,617	$422K	0.1%	$43.07	+59.1%	COMM	46625H100
DUK	Duke Energy	5,030	$420K	0.1%	$42.21	+40.0%	COMM	26441C204
CAT	Caterpillar	3,553	$382K	0.1%	$60.35	+39.3%	COMM	149123101
SEIC	SEI Investments	7,000	$376K	0.1%	$26.47	+74.3%	COMM	784117103
ULTA	Ulta Beauty	1,291	$371K	0.1%	$166.69	+75.1%	COMM	90384S303
—	Time Warner New	3,666	$368K	0.1%	$87.19	—	COMM	887317303
MNST	Monster Beverage	7,264	$361K	0.1%	$23.31	+3.3%	COMM	61174X109
INGR	Ingredion	3,000	$358K	0.1%	$80.34	+47.8%	COMM	457187102
STT	State Street Corp.	3,899	$350K	0.1%	$57.63	+11.4%	COMM	857477103
MDLZ	Mondelez Int'l	7,963	$344K	0.1%	$28.45	+28.9%	COMM	609207105
COP	ConocoPhillips	7,561	$332K	0.1%	$42.95	-17.4%	COMM	20825C104
NOC	Northrop Grumman	1,282	$329K	0.1%	$114.24	+90.4%	COMM	666807102
WY	Weyerhaeuser	9,648	$323K	0.1%	$18.65	+28.9%	COMM	962166104
EW	Edwards Lifesciences	2,670	$316K	0.1%	$36.50	0.0%	COMM	28176E108
—	WGL Holdings	3,650	$305K	0.1%	$54.94	—	COMM	92924F106
—	Aetna	2,000	$304K	0.1%	$127.00	—	COMM	00817Y108
—	Noble Energy	9,900	$280K	0.1%	$60.00	—	COMM	655044105
GOOG	Alphabet Inc. Class C	305	$277K	0.1%	$35.61	+27.6%	COMM	02079K107
BRK/A	Berkshire Hathaway 'A'	1	$255K	0.0%	$199512.94	+25.1%	COMM	084670108
KIM	Kimco Realty	13,750	$252K	0.0%	$12.78	-0.8%	COMM	49446R109
CMI	Cummins Inc.	1,500	$243K	0.0%	$84.55	+46.4%	COMM	231021106
—	L3 Technologies	1,425	$238K	0.0%	$146.89	—	COMM	502424104
PGR	Progressive Corp.	5,200	$229K	0.0%	$29.31	+9.5%	COMM	743315103
ORCL	Oracle Corp.	4,266	$214K	0.0%	$36.49	+9.9%	COMM	68389X105
VFC	VF Corporation	3,665	$211K	0.0%	$61.34	-15.9%	COMM	918204108
GIS	General Mills	3,782	$210K	0.0%	$32.23	+30.3%	COMM	370334104
—	The Priceline Group	112	$209K	0.0%	$1866.07	—	COMM	741503403
ADI	Analog Devices	2,633	$205K	0.0%	$66.43	+1.6%	COMM	032654105
REGN	Regeneron Pharmaceuticals	415	$204K	0.0%	$435.19	0.0%	COMM	75886F107