You can find it on Ebay occasionally but they get expensive. My father-in-law actually found this one at a flea market.
There is not ISBN number, the book was published in 1937 and the company has been out of business for over 50 years. I may eventually scan the whole thing in and make a pdf file, but that will be a lot of work for no money.
If I do it I may be able to sell a cd (to cover the cost of production and materials. I have to double check the copyright laws. Sharing old scans for no money is one thing, selling them is different.