With regards to The Hobbit with an Introduction by R.S. Fowler. I believe there were 3 printings (1972, 1974 and 1976).

I certainly have the 1972 and 1974 Printings and I will check later, but from memory, I think I have a copy printed in 1976 also.

Indeed, there is a third impression from 1976.

remy is quite correct, there were three impressions of the Fowler Hobbit book, details below.

http://web.archive.org/web/2007101418 ... tails.php?reference=21500