Fellowship of the RIng first US Edition question about impressions

There is a very good article on this in the Tolkien Collector issue #20, you can order this from https://www.hammondandscull.com/collect.html

The article is copyright, so can not publish it here, but it should help with your queries.

Hello
Thank you Trotter. Are W&C just offering for purchase physical copy? I can't find any digital version to purchase...

I think it is just a physical copy but hopefully Findegil can give you a definitive answer if you contact them?