Vintage Lot of 8 Paperback Books by the Whitman Publishing Co 1940.  These are kids learning books from 1940.  Here is the title of each book...  Rubber, Paper, Glass, Steel, Houses, Wool, Oil & Lumber.  The Rubber book mentions Goodyear tire company many times.  Please look at all pics and message me with any questions.  Each book has a different author shown in pics.