Specifications, with notes by FLW. Guggenheim Museum, New York, c.1956 (copy 8). One of a group of 13.
Specification booklets were made in a limited number for each project: for the client, various contractors and others associated with the project including, of course, FLW's archive. This group of 13 Specification booklets span Wright's career from the 1900's to the 1950's and some contain annotations in his handwriting.