Warning: Some of these I have not read, so I cannot vouch for the quality. I found them while browsing Amazon. As of Jan. 21, 2013 they are free on Amazon. If you like this then reblog and share the wealth and maybe get these authors some coverage.
Time Traders by Andre Norton. I have read this….great book!
Northworld Trilogy by David Drake. Haven’t read this, but I have read some of Drake’s work before and enjoyed it.
The Last Praetorian (The Redemption Trilogy) by Mike Smith. Looks interesting.
The Mighty Peculiar Incident At Muddy Creek by Ian Thomas Healy. The Old West and time travel.
The Phoenix Conspiracy (The Phoenix Conspiracy Series) by Richard Sanders. Intrigue in deep space.