Notes: Hardcover book in good condition, with some minor overall wear & some sunning to the spine. The hinges and binding are tight and a few pages have a sentence underlined. There is a small area of abrasion on the edges of the pages. Some of the contents include short selling, commodities trading, the advantages in stock trading and how to buy, protect and sell. Weld was a market technician and analyst. He was a frequent writer for Barron’s during the 1930’s and 40s.