backstamps by american artists and workshops

COWAN POTTERY (Ohio)
By the Cowan Pottery Museum Associates /
English language
www.cowanpottery.org/

FRANCISCAN MARKS
Franciscan Marks Brochure (1962) / English language
https://gmcb.com/franciscan_archive/index.php/library/

HULL, CLEMENT MAROT 1916-1965
Site dedicated to the work of Clement Hull / English language
www.clemhull.com/BottomMarkings.html

McCOY POTTERY
Marks from the Amercian manufacturer Nelson McCoy / English language
www.mccoypottery.com/mark.html

MITCHELL, WOODBURY & Co.
MWCo, M.W.Co., in diffrent shapes and borders
Retailer in Pearl Street in Boston, excellent site by Christopher S. Marshall / English language
https://www.porcelainmarksandmore.com/related/usa/boston-01/index.php

PATENT DATES USA
United States Patent Dates and Numbers 1836-1990 / English language
www.biddingtons.com/content/patentchart.html

ROOKWOOD POTTERY
Site with many marks in regards to the pottery founded in 1880 by Maria Longworth Nichols, Rookwood Pottery of Cincinnati, Wikepedia / English language
https://en.wikipedia.org/wiki/Maria_Longworth_Storer

SOUTHERN POTTERIES 1916-1957(Erwin, Tennessee)
Blue Ridge / Southern Potteries / with mountain
Marks / English language
www.southernpotteries.com/marks.html
Pattern numbers,
www.southernpotteries.com/patterns_main.html

UHL POTTERY MARKS
Site by the “UHL Collectors Society” about the Amercian manufacturer / English language
https://www.uhlcollectorssociety.com/

VAN BRIGGLE MARKS
Van Briggle Pottery was established in 1899 / English language
clemhull.com/BottomMarkings.html