Time Travel story search

Hello. This is Bob and I am new here. I joined because I am looking for a specific story I remember reading as a kid (probably in the 50's or early sixties). it was a time travel story about a group that would change the future by effecting maximum change with minimum actual effort. I remember only that the central change made was to simply push a child's block back on a closet shelf so that a child could not see it. This minor change affected the future in a major way. Does anyone out there know the story and or its author? I am not sure if this was a short story, a novel, or a novella. Thank you

Bob

 

Hi Bob

You might also try asking at the Amazon sci-fi forum. There are a couple guys there who have a reputation of coming up with long lost titles from long ago. Here's the address:

https://www.amazon.com/forum/science fiction/?cdForum=FxWK0QNW07Z4M7

 

K,

Thanks. I shall check. Any chance you have the handles of these guys?

Bob

 

Gilbert and Tom. Gilbert in particular amazes us.

 

Thanks k. I appreciate the response.

 

I see they are playing hard to get. I'll post a little nudge but it will be my Amazon ID.

 

That's better but Gil must not have it either or he would post. At least they're all into the challenge though. I know I'm going to check it out once it's discovered.

 

Bob, did you see what happened on the "hopeless" search thread at Amazon sci-fi forum? That's what Gil does. So he's drawing a blank on yours or he would post. Never does until he's sure. Yours has more people searching and I would bet it will be figured out if End of Eternity isn't the one.

 

I read End of Eternity and while it is similar to my story, it does not have the alphabet block.