New Worlds (US) 1960-06 v01n04
New Worlds (US)
Fantastic 1969-06 v18n05
Fantastic
Amazing Stories 1963-08 v37n08
Amazing Stories
Day Million
Frederik Pohl
Science Fantasy (UK) 1963-04 #58v20
Science Fantasy (UK)
Startling Mystery Stories 1966-Spring v01n02
Startling Mystery Stories
Startling Mystery Stories 1966-Winter v01n03
Startling Mystery Stories 1968-Winter v02n05
The Arkham Collector 1969-Summer #05
The Arkham Collector
Venture (UK) 1963-10 v06n02
Venture (UK)