I did not see a thread started for skillbook locations yet. So far I have found:

Nikola Tesla & You - Hopeville Missle Base HQ under book on shelf Right of entrance
Guns & Bullets - Hopeville Armory under desk back right hand corner
Tumblers Today - Hopeville Men's Barricks in bathroom
Duck & Cover - at the end of the Collapsed Overpass Tunnel on right behind oval sanbag barrier in open container with Teddy bear
Lying Congressional Style - enter Grate to Municipal Sewers exit on second floor of building under physicians desk
Pugilism Illustrated - sewer to Waste water treatment plant in office room far right corner behind lockers
Wasteland Survivor Guide -in waste disposal station, its a cave entrance also contains a note for the nostalgia finds

If someone has found others please post. Cheers.