If I’m lucky, I might find the book you cite at a tag sale this weekend! ;-D
I’d be VERY surprised if you don’t see one there or at a thrift store, etc... They printed many millions of them, and it’s still in print (since 1937!) http://www.amazon.com/s/ref=nb_ss_b/103-0349514-1817440?url=search-alias%3Dstripbooks&field-keywords=think+grow+rich&x=15&y=22