Cheap in Kindle format right now:
Robert Heinlein’s Expanded Universe: Volume One
Heinlein personally selected each story or essay for inclusion in this collection, which is ordered chronologically, starting with his first sale in 1939 of “Life-Line” to Astounding (for seventy dollars).This remarkable collection highlights the development of Heinlein’s writing style and his philosophy on life throughout his career.
More importantly, this collection is as close to an autobiography as anything Heinlein wrote during his life. Heinlein was an extremely private person who never wrote much about himself. In this exclusive collection, he offers forewords to most of his stories and essays (and an occasional afterword), giving readers a rare glimpse into the inner mind of the master.
Expanded Universe is a must-have for any Heinlein enthusiast and any fan of science fiction.
Get Call for the Dead: A George Smiley Novel (George Smiley Novels Book 1) if you feel like starting (or restarting) the Smiley Series, a story about happier times when Russian Spies were Russian Spies, and so were the British Spies. It is the first in the Smiley series.