I got a copy through interlibrary loan. 1950 and it looks great. While the textbook I bought in 2012 for $60 has the pages all warped and turning yellow. They don't make 'em like they used to. I can buy a used hardcover copy of the first edition for $21. I might go for that. Some joker wants $200 for a used paperback copy in "acceptable" (the lowest rating) condition. Ha ha. Very funny.