This listing is for two books: the International Correspondence Schools Decimals 1941 Edition 1 Serial 1977 and the International Correspondence Schools Elementary Architectural Drawing Part 3.
 
International Correspondence Schools Decimals 1941 Edition 1 Serial 1977
This is an International Correspondence Schools, Scranton, PA book of Decimals prepared especially for home study by I.C.S. Staff, Serial 1977, Edition 1 from 1941. Book has 34 numbered pages and 2 pages of examination questions.
 
International Correspondence Schools Elementary Architectural Drawing Part 3
This is an International Correspondence Schools, Scranton, PA book of Elementary Architectural Drawing Part 3 prepared especially for home study by William S. Lowndes, Ph.B., A.I.A. Serial 2587C, Edition 1 from 1940. Book has 19 numbered pages and 4 foldouts.
 
Both are still plenty readable and full of a lot of good information. Each book is 5" wide x 7-1/2" tall.