Tom Swift and the Cosmic  Astronauts, Victor Appleton II © 1960, published by Grosset  & Dunlap, #16 in the series.  You'll just  love this science fiction adventure book, that soon should become science fact.  The  book is in (g) condition, w/ worn corners, spine is sun faded, end papers split.  Thanks for looking.     gerry-2011-35