The House that Stood Still by A E Van Vogt

Paperback. Condition: Good. 1971. Paperback Library. 3rd Printing.

Allison Stephens knew there was something mysterious about the house and the people in it. Then he stumbles on the space ship and learned of the atomic war soon to destroy the earth. He also found the strange people who lived for hundreds of years and possessed the knowledge of centuries.. they could have saved mankind.. but instead they planned to escape to another planet!