Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
ADP	Automatic Data Processing	250,033	$25.7M	5.1%	$45.45	+68.9%	COMM	053015103
MA	Mastercard	185,602	$19.16M	3.8%	$70.99	+38.4%	COMM	57636Q104
TJX	TJX Companies	232,578	$17.47M	3.4%	$21.34	+55.7%	COMM	872540109
ECL	Ecolab	144,993	$17M	3.4%	$74.34	+42.6%	COMM	278865100
SYK	Stryker	134,719	$16.14M	3.2%	$61.57	+68.8%	COMM	863667101
CL	Colgate-Palmolive	216,484	$14.17M	2.8%	$44.45	+24.6%	COMM	194162103
XOM	ExxonMobil	153,034	$13.81M	2.7%	$53.77	+8.2%	COMM	30231G102
AAPL	Apple	117,116	$13.56M	2.7%	$18.35	+42.2%	COMM	037833100
NKE	NIKE 'B'	265,309	$13.49M	2.7%	$42.01	+8.5%	COMM	654106103
JNJ	Johnson & Johnson	116,973	$13.48M	2.7%	$60.16	+49.1%	COMM	478160104
KO	Coca-Cola	322,786	$13.38M	2.6%	$27.85	+12.1%	COMM	191216100
MKC	McCormick & Co.	126,060	$11.77M	2.3%	$28.42	+37.9%	COMM	579780206
CHD	Church & Dwight	246,603	$10.9M	2.2%	$35.05	+15.6%	COMM	171340102
—	Celgene	91,985	$10.65M	2.1%	$101.18	—	COMM	151020104
MCD	McDonald's	86,924	$10.58M	2.1%	$71.80	+31.3%	COMM	580135101
FISV	Fiserv	98,215	$10.44M	2.1%	$25.30	+103.0%	COMM	337738108
PG	Procter & Gamble	104,074	$8.751M	1.7%	$55.00	+21.4%	COMM	742718109
ABT	Abbott Labs	224,867	$8.637M	1.7%	$29.43	+14.3%	COMM	002824100
PEP	PepsiCo	81,506	$8.528M	1.7%	$56.34	+40.9%	COMM	713448108
MSFT	Microsoft	132,557	$8.237M	1.6%	$26.70	+102.0%	COMM	594918104
ABBV	AbbVie	129,937	$8.137M	1.6%	$26.55	+57.4%	COMM	00287Y109
—	Walgreens Boots Alliance	92,703	$7.672M	1.5%	$76.00	—	COMM	931427108
—	United Technologies	66,305	$7.268M	1.4%	$94.07	—	COMM	913017109
FDS	FactSet Research Systems	42,681	$6.975M	1.4%	$93.65	+55.1%	COMM	303075105
INTU	Intuit	58,548	$6.71M	1.3%	$57.59	+81.9%	COMM	461202103
IDXX	IDEXX Labs	50,306	$5.899M	1.2%	$61.57	+85.3%	COMM	45168D104
DHR	Danaher	67,975	$5.291M	1.0%	$31.81	+108.6%	COMM	235851102
ACN	Accenture Ltd. 'A'	45,175	$5.291M	1.0%	$80.68	+27.9%	COMM	G1151C101
SBUX	Starbucks	93,804	$5.208M	1.0%	$39.84	+14.4%	COMM	855244109
BF/B	Brown-Forman 'B'	115,293	$5.179M	1.0%	$28.10	+10.2%	COMM	115637209
SYY	Sysco Corp.	90,707	$5.022M	1.0%	$24.40	+67.8%	COMM	871829107
DIS	Disney, Walt	46,299	$4.825M	1.0%	$85.77	+5.8%	COMM	254687106
QCOM	QUALCOMM	73,256	$4.776M	0.9%	$46.43	+12.5%	COMM	747525103
USB	US Bancorp	90,998	$4.675M	0.9%	$22.74	+48.5%	COMM	902973304
ITW	Illinois Tool Works	37,684	$4.615M	0.9%	$50.91	+90.9%	COMM	452308109
—	Praxair	37,715	$4.42M	0.9%	$116.25	—	COMM	74005P104
BR	Broadridge Financial Solutions	65,173	$4.321M	0.9%	$40.72	+36.7%	COMM	11133T103
NEE	NextEra Energy	34,305	$4.098M	0.8%	$19.29	+23.0%	COMM	65339F101
PFF	iShares S&P US Pfd	99,300	$3.695M	0.7%	$39.46	—	DEBT	464288687
VZ	Verizon Communications	66,477	$3.549M	0.7%	$27.25	+13.7%	COMM	92343V104
PAYX	Paychex	55,975	$3.408M	0.7%	$26.21	+67.6%	COMM	704326107
RHHBY	Roche Holding Ltd ADR	119,300	$3.404M	0.7%	$49.05	—	COMM	771195104
GILD	Gilead Sciences	45,343	$3.247M	0.6%	$55.92	-4.9%	COMM	375558103
AMT	American Tower 'A'	29,385	$3.105M	0.6%	$74.46	+15.9%	COMM	03027X100
BCPC	Balchem	36,825	$3.09M	0.6%	$48.33	+54.9%	COMM	057665200
LLY	Lilly, Eli	41,350	$3.041M	0.6%	$42.21	+52.1%	COMM	532457108
HP	Helmerich & Payne	37,622	$2.912M	0.6%	$62.73	+13.2%	COMM	423452101
T	AT&T	68,244	$2.902M	0.6%	$11.56	+33.7%	COMM	00206R102
MRK	Merck	49,031	$2.886M	0.6%	$40.15	+9.8%	COMM	58933Y105
GOOGL	Alphabet Inc. Class A	3,586	$2.842M	0.6%	$39.05	+1.6%	COMM	02079K305
TSCO	Tractor Supply Company	36,970	$2.803M	0.6%	$15.06	-18.2%	COMM	892356106
—	Weingarten Realty	78,073	$2.794M	0.6%	$35.27	—	COMM	948741103
CVS	CVS Health	34,865	$2.751M	0.5%	$57.13	+6.9%	COMM	126650100
APD	Air Products & Chemicals	19,007	$2.734M	0.5%	$61.75	+80.7%	COMM	009158106
—	Stericycle	34,382	$2.649M	0.5%	$112.40	—	COMM	858912108
—	General Electric	79,086	$2.499M	0.5%	$23.23	—	COMM	369604103
—	CDK Global Inc.	41,689	$2.488M	0.5%	$59.68	—	COMM	12508E101
EMR	Emerson Electric	43,661	$2.434M	0.5%	$39.77	+7.8%	COMM	291011104
NVO	Novo Nordisk ADR	65,806	$2.36M	0.5%	$68.55	—	COMM	670100205
WMT	Wal-Mart Stores	33,991	$2.349M	0.5%	$19.98	-0.4%	COMM	931142103
CSCO	Cisco Systems	76,071	$2.299M	0.5%	$15.33	+50.4%	COMM	17275R102
JKHY	Jack Henry & Associates	25,820	$2.292M	0.5%	$56.78	+34.8%	COMM	426281101
UNP	Union Pacific	20,621	$2.138M	0.4%	$74.05	+8.5%	COMM	907818108
LOW	Lowe's	29,775	$2.118M	0.4%	$32.88	+81.9%	COMM	548661107
WEX	WEX	18,885	$2.108M	0.4%	$94.77	+14.2%	COMM	96208T104
MMM	3M Company	11,668	$2.084M	0.4%	$66.30	+60.2%	COMM	88579Y101
INTC	Intel	56,755	$2.059M	0.4%	$17.46	+67.0%	COMM	458140100
GWW	Grainger, W.W.	8,717	$2.025M	0.4%	$204.51	-5.0%	COMM	384802104
BRK/B	Berkshire Hathaway 'B'	12,400	$2.021M	0.4%	$142.10	+8.3%	COMM	084670702
PM	Philip Morris Int'l	21,554	$1.972M	0.4%	$49.72	+17.1%	COMM	718172109
CTSH	Cognizant Technology	33,206	$1.861M	0.4%	$42.61	+11.3%	COMM	192446102
IBM	IBM	11,141	$1.849M	0.4%	$118.94	-13.4%	COMM	459200101
AMGN	Amgen	12,500	$1.828M	0.4%	$73.61	+55.4%	COMM	031162100
FAST	Fastenal	37,850	$1.778M	0.4%	$8.79	-1.7%	COMM	311900104
HD	Home Depot	13,134	$1.761M	0.3%	$56.37	+83.4%	COMM	437076102
MPC	Marathon Petroleum	34,838	$1.754M	0.3%	$32.00	+6.9%	COMM	56585A102
XRAY	Dentsply Sirona	28,317	$1.635M	0.3%	$59.08	0.0%	COMM	24906P109
EOG	EOG Resources	15,360	$1.553M	0.3%	$58.89	+22.9%	COMM	26875P101
HSIC	Henry Schein	10,021	$1.52M	0.3%	$38.13	+58.3%	COMM	806407102
PFE	Pfizer	46,660	$1.516M	0.3%	$16.45	+24.6%	COMM	717081103
AMZN	Amazon.com	1,963	$1.472M	0.3%	$13.43	+191.8%	COMM	023135106
BDX	Becton, Dickinson	8,666	$1.435M	0.3%	$78.41	+84.5%	COMM	075887109
FLO	Flowers Foods	70,300	$1.404M	0.3%	$13.95	-17.7%	COMM	343498101
SLB	Schlumberger	16,346	$1.372M	0.3%	$55.37	+13.8%	COMM	806857108
EL	Estee Lauder	17,823	$1.363M	0.3%	$74.35	-2.7%	COMM	518439104
WELL	Welltower, Inc.	20,200	$1.352M	0.3%	$54.00	-12.4%	COMM	95040Q104
EXPD	Expeditors Int'l	23,950	$1.268M	0.3%	$31.69	+47.0%	COMM	302130109
—	Tiffany	15,640	$1.211M	0.2%	$75.16	—	COMM	886547108
—	Linear Technology	18,750	$1.169M	0.2%	$37.02	—	COMM	535678106
DE	Deere & Company	11,150	$1.149M	0.2%	$68.04	+19.7%	COMM	244199105
D	Dominion Resources	14,850	$1.137M	0.2%	$34.53	+43.2%	COMM	25746U109
—	Kellogg	14,700	$1.084M	0.2%	$38.92	+28.6%	COMM	487836108
VFC	VF Corporation	20,125	$1.074M	0.2%	$61.34	-15.5%	COMM	918204108
BFS	Saul Centers	14,250	$949K	0.2%	$45.35	—	COMM	804395101
—	Panera Bread	4,527	$928K	0.2%	$184.71	—	COMM	69840W108
BMY	Bristol-Myers Squibb	15,568	$910K	0.2%	$45.92	-13.9%	COMM	110122108
—	Dr. Pepper Snapple	9,675	$877K	0.2%	$47.32	—	COMM	26138E109
PRAA	PRA Group	19,740	$772K	0.2%	$34.09	0.0%	COMM	69354N106
ROST	Ross Stores	11,670	$766K	0.2%	$37.48	+59.4%	COMM	778296103
FTV	Fortive	14,147	$759K	0.1%	$30.87	+3.2%	COMM	34959J108
CVX	Chevron	6,196	$729K	0.1%	$69.46	+6.3%	COMM	166764100
HSY	Hershey Company	6,995	$723K	0.1%	$71.62	+11.0%	COMM	427866108
GPC	Genuine Parts	7,460	$713K	0.1%	$62.69	+16.6%	COMM	372460105
EQR	Equity Residential Properties	10,720	$690K	0.1%	$31.42	+40.2%	COMM	29476L107
HPE	Hewlett Packard Enterprise	27,966	$647K	0.1%	$6.50	+57.5%	COMM	42824C109
ISRG	Intuitive Surgical	965	$612K	0.1%	$54.33	+35.3%	COMM	46120E602
HAIN	Hain Celestial Group	15,625	$610K	0.1%	$60.37	-37.9%	COMM	405217100
—	HCP Inc.	19,200	$571K	0.1%	$43.98	—	COMM	40414L109
HCSG	Healthcare Services Group	13,200	$517K	0.1%	$25.14	+52.0%	COMM	421906108
JPM	JPMorgan Chase	5,084	$439K	0.1%	$41.72	+43.6%	COMM	46625H100
CSX	CSX Corp.	12,000	$431K	0.1%	$6.66	+48.3%	COMM	126408103
KHC	Kraft Heinz	4,808	$420K	0.1%	$47.82	+18.1%	COMM	500754106
HPQ	HP Inc.	27,700	$411K	0.1%	$11.22	0.0%	COMM	40434L105
TRMB	Trimble Inc.	13,560	$409K	0.1%	$29.70	-3.5%	COMM	896239100
MO	Altria	5,900	$399K	0.1%	$24.45	+38.9%	COMM	02209S103
COP	ConocoPhillips	7,835	$393K	0.1%	$42.95	-19.0%	COMM	20825C104
DUK	Duke Energy	5,030	$390K	0.1%	$42.21	+24.8%	COMM	26441C204
SU	Suncor Energy	8,750	$384K	0.1%	$20.73	+6.2%	COMM	867224107
—	Noble Energy	9,900	$377K	0.1%	$60.00	—	COMM	655044105
INGR	Ingredion	3,000	$375K	0.1%	$80.34	+57.3%	COMM	457187102
MDLZ	Mondelez Int'l	8,011	$355K	0.1%	$28.45	+22.1%	COMM	609207105
KIM	Kimco Realty	14,050	$353K	0.1%	$12.78	+30.2%	COMM	49446R109
—	Time Warner New	3,610	$348K	0.1%	$86.98	—	COMM	887317303
SEIC	SEI Investments	7,000	$346K	0.1%	$26.47	+57.0%	COMM	784117103
CAT	Caterpillar	3,703	$343K	0.1%	$60.35	+22.2%	COMM	149123101
ULTA	Ulta Salon Cosmetics	1,325	$338K	0.1%	$165.12	+51.3%	COMM	90384S303
V	Visa	4,250	$332K	0.1%	$60.17	+25.4%	COMM	92826C839
MNST	Monster Beverage	7,200	$319K	0.1%	$23.31	-1.8%	COMM	61174X109
STT	State Street Corp.	3,899	$303K	0.1%	$57.63	-0.2%	COMM	857477103
NOC	Northrop Grumman	1,282	$298K	0.1%	$114.24	+75.6%	COMM	666807102
—	WGL Holdings	3,650	$278K	0.1%	$54.94	—	COMM	92924F106
WY	Weyerhaeuser	9,160	$276K	0.1%	$18.42	+17.7%	COMM	962166104
—	Aetna	2,000	$248K	0.0%	$127.00	—	COMM	00817Y108
BRK/A	Berkshire Hathaway 'A'	1	$244K	0.0%	$199512.94	+15.7%	COMM	084670108
GIS	General Mills	3,882	$240K	0.0%	$32.23	+39.2%	COMM	370334104
GOOG	Alphabet Inc. Class C	305	$235K	0.0%	$35.61	+8.6%	COMM	02079K107
—	L-3 Communications	1,525	$232K	0.0%	$146.89	—	COMM	502424104
CMI	Cummins Inc.	1,600	$219K	0.0%	$84.55	+24.6%	COMM	231021106
PSX	Phillips 66	2,487	$215K	0.0%	$56.03	+4.7%	COMM	718546104