Dating information.
W.T. & Co. 1857-1901
W.T Co.  1901-

1880 -- no mention of custom lettered medicine glasses in catalogs.
1887 -- #7 & #12 embossed
W.T.-Tacoma Bonney & Hahler Druggists Tacoma,W.T. {sm circa 1885 nothing}
W.T.-Tacoma Compliments Of Stewart's Pharmacy Tacoma W.T. {sm circa 1886 W.T.& Co.}

1897 -- #40 spoon
NJ-Millville Graduated No. {W.T. & Co. Monogram} 40 Medicine Spoon

Size #18 conical Before 1907-
I.T.-Okmulgee Cook’s Pharmacy Okmulgee, I.T. {conical} {before 1907}
I.T. Poteau Noble & Bird Druggists Poteau, I.T. {conical} {before 1907}

Acid Etched 1904-
OK-Alva-Palace Drug Store J.F. Greenlee Phone 26 Alva, Okla. Circa:1912
OK-Pond Creek-B.C. Sahm Prescription Druggist Pond Creek, Okla. Circa:1904

Silk Screened
W.T. & Co. markings
After 1891-1901
McKinley Tariff Act
Country Of Origin
marks needed.

W.T. & Co. AA U.S.A.
W.T. & Co. AB U.S.A.
W.T. & Co. AC U.S.A.
W.T. & Co. AD U.S.A.
W.T. & Co. AF U.S.A.
W.T. & Co. AG U.S.A.
W.T. & Co. AH U.S.A.
W.T. & Co. AI  U.S.A.
W.T. & Co. AJ U.S.A.
W.T. & Co. AK U.S.A.
W.T. & Co. AL U.S.A.
After 1901

W.T. Co. T U.S.A.
W.T. Co. AH U.S.A.
W.T. Co. AJ U.S.A.
W.T. Co. AL U.S. A.
W.T. Co. AM U.S.A.
W.T. Co. AN U.S.A.
Single Letter Marks
1870's early 1880's
B Fultonville, N.Y.
C Watkins, N.Y.
E Evanston, WY {1870's}
G
H Springfield, OH
I  Deposit, N.Y.
J Chillicothe, OH
O Grafton, D.T. {1870's}
Most Large Size Cups Seem To
Have No Markings Or A Single C
These cups weigh 2 1/2 ounces.

Large size with W.T. & Co. marks
weigh 1 1/2 ounces.

My thoughts are cups with single
letter markings were made by
different glass company's.
W.T. & Co.
Early Marks Before 1891 {No U.S.A.}
Dates that are known when the cups were in use.
W.T. & Co. B  Atlanta, GA
W.T. & Co. M Fort Plain, N.Y. {1872}
W.T. & Co. O Salem Ogn. {1880 on}
W.T. & Co. R  Sheboygan, WI
W.T. & Co. S  Logan City, UT
W.T. & Co. Q Juarez, Mexico
W.T. & Co.
After 1901
Transition Marks-Before the
Lower works in SO. Millville
Upper Works Millville Proper

W.T. & Co. E  U.S.A.
W.T. & Co. T  U.S.A.
W.T. & Co. W U.S.A.
The listings below will help you to date your dose cups.
Millville, N.J.
Original Plant
Millville proper
Lower works in South Millville (formerly known as Schetterville)
CO-OP F.G. Co.
Co-Operative Flint Glass Company of Upland, Indiana, they were closed by 1911. By that time they were called the Co-Operative Glass Company.
The mark is found on the following small size cups.
Woodard Clark & Co.  mono Portland Or. {CO-OP F.G. Co. small }
Lengfeld’s 202 Stockton St. S. F. Pharmacy  { backwards N in Lengfield’s} {CO-OP F.G. Co. small }
Single letters were used at
the Millville Proper Plant.
Double letters were used at the Lower works in So. Millville, NJ.
Dose Cups with the Hazel Atlas mark are after 1901. ------->
Dose Cup Dating Page #2
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