Poul Anderson

I have only read a few books written by Anderson, but I thoroughly enjoyed those books.

Books I've Read by Poul Anderson

(with Larry Niven and Dean Ing)
Once upon a time, in the earliest days of interplanetary exploration, an unarmed human vessel was set upon by a warship from the planet Kzin. But the Kzinti learned the hard way that the reason humanity had given up war was that they were so very, very good at it. Thus began the Man-Kzin Wars. (from an Amazon.com review)

(with Larry Niven and S.M. Stirling)
The Mind Slavers are back--and only the cat-like Kzinti can save mankind now. This volume includes all-new tales of Larry Niven's Known Space--including one by Niven himself. Another blockbuster in the ongoing chronicle of humanity's greatest war. (from an Amazon.com review)

or (Out of Stock)
In a war waged against Black Magic, the fact that Steve is a werewolf and his wife is a highly skilled witch is not unusual. But their adventures prove very unusual, even for their world, when they are given the task of neutralizing an enemy's ultimate weapon--the world's most powerful demon. (from an Amazon.com review)