I have posted a Maine topo map here. It is free for non commercial use (no adware or any tricks like that). You can download it and install it on your Garmin GPS, or use other software tools to print it on paper if you prefer. The installer is for Windows only but we could also make a Mac version in the future.

Even if you do not have a Garmin GPS you can still use Map Source to view the map. There is a link on how to do that.