As others have said DeLorme's are still being produced. Not sure if the OP still needs this info or not. I'm in Maine now exploring the coast and helping out family for the summer. Kept them rolled in a homemade quiver slung over crossways, for snowshoeing and hiking all up around Moosehead and down on Mt Desert. I also used to get great topo maps from the trading posts up around Moosehead and sometimes at the AMC store on Mt Desert Island. You can also find and order the Delorme Atlas & Gazetteers online at Cabelas and at Garmin.
Here's a cool wiki page on Delorme and how he transformed map availability. I wish I still had my old ones from the seventies. I have their Atlas's for NH/VT, Mississippi, and Texas, as well. David Delorme went on to doing maps for upstate NY, too, and then more and more.
I first started using the Maine Atlas & Gazetteer from Delorme living in Maine in the late 1970's, when it was their first and only product. This edition says DeLorme Publishing 35th edition (December 13, 2018). , You can still get the Delorme Maine Atlas & Gazetteer.
