All I had was a memory of reading about a giant infant brought to a warehouse, where a man studied him.  L158 “Large Child Playing With Real Cars” indicated the story was from a 1950’s or 1960’s elementary school reader, which seems right–the book was from the library back when I was 8 or 9 in the early 60’s.  It mentions the warehouse, which I remember, the man, which I do recall must have been a scientist, but other than this I’m completely drawing a blank.

Thanks for any help you can give,