Bill Warren gives it the respect it deserves in his Keep Watching the Skies! American Science Fiction Movies of the Fifties. Somewhat a sequel to Forbidden Planet (well, if you do a lot of stretching in regards to Robby the Robot's presence, that is), the story is geared for young boys of the 1950s (who wouldn't want a powerful robot guardian, boy or girl?). Toss in an evil-thinking super computer that wants world domination and you have a boy just wanting to have fun, but he has to save the world too, which can be such a bother. His parents are eggheads, making it a bit difficult for him (he's just an average kid), and Robby, of course, must choose to become more than the sum of his diodes too. Definitely worth a watch if you haven't seen it yet.
Read the comics reader version: Download Invisible Boy Pressbook.
Here are some publicity stills and lobby cards.
And the lobby cards courtesy of Terry Michitsch.