There are almost no real references on Burley Winter Art Pottery, so I'm going to link to everything I have found.
A nice history https://burleywinter.com/
An perhaps incomplete reference for glazes, covering the first glazes used on art pottery from 1932-? It is unclear if it covers all of the art pottery glazes from 1932-1943.
https://burleywinter.com/glazes.html
looks like they deleted it, here is what it used to look like:
https://web.archive.org/web/20210516153201/https://burleywinter.com/glazes.html
A definitely incomplete reference for shapes showing less than 2 dozen shapes
https://burleywinter.com/shapes.html
I gather that all the information we could desire is in a reference book that is out of print and not even listed at thriftbooks or amazon:
Title, Burley Winter: An Introduction. Authors, Daniel Swingle, Dale R. Stoin. Publisher, Buckeye Print. and Mailing Service, 1999. Length, 60 pages.
There are a couple of catalogs out there or at least one complete catalog and some catalog pages. Catalog 17 is from before the art pottery.
It is probably best to consult the experts in the collectors group on Facebook if you really need to know something.
Be aware that if you do find a copy, a few of the items in it are known now by BW collectors to not be from Burley & Winter after all.