Adventure stories with a hard SF edge:
James P. Hogan - Inherit the Stars (and sequels), Thrice upon a time, Voyage from yesteryear, Proteus Operation
Niven & Pournelle - Mote in God's Eye
Poul Anderson - Tau Zero, There will be time, Brain Wave
Gordon R. Dickson - Time Storm
James Blish - Cities in flight, Quincunx of time
Alan Dean Foster - Flinx/Humanx Commonwealth series
Last edited by fjtorres; 03-04-2013 at 02:20 PM.