Lot of 3  Vintage paperback books by POUL ANDERSON are ;

 - Guardians of Time ( Ballantine 422k, First printing 1960 )

  - Corridors of Time ( Lancer 73-505, First printing 1966 ).

  & Vault of the Ages ( Avon/Camelot ZS161,  First printing 1969 ).

  Books are in Very Good Condition. FREE SHIPPING!