How to identify a G. P. Putnam's Sons first edition
Putnam did not mark first editions before the mid-1980s, but labelled later printings. Since then it uses a number line.
What to look for, by period
before 1985
No first edition statement. Later printings are marked (for example “Second Impression”), so an unmarked copy is usually a first.
1985 – today
A number line. The lowest number is the printing.
Dates are approximate. Imprints and individual titles sometimes differ; for valuable books, check a bibliography of the author.
Check your G. P. Putnam's Sons book
New to number lines? Read how to read a number line, and how to spot a book club edition.