Piper, H Beam
Chronological Checklist

Series – Terro-Human Future History: Federation

13 titles
• Four-Day Planet (New York: G P Putnam's Sons, 1961)
• Junkyard Planet (New York: G P Putnam's Sons, 1963)
• Space Viking (New York: Ace Books, 1963)
• The Cosmic Computer (New York: Ace Books, 1964)
• Four-Day Planet/Lone Star Planet (New York: Ace Books, 1979)
• Federation (New York: Ace Books, 1981)
• Empire (New York: Ace Books, 1981)
• Uller Uprising (New York: Ace Books, 1983)
• The Edge of the Knife (place not given: Project Gutenberg, 2006)
• The Keeper (place not given: Project Gutenberg, 2006)
• Omnilingual (place not given: Project Gutenberg, 2006)
• Oomphel in the Sky (place not given: Project Gutenberg, 2007)
• Ministry of Disturbance (place not given: Project Gutenberg, 2007)