Project help...

Hello Friends! Long time since I have been active in here. Just kinda been a ghost and watching. Well I have a project I am just doing for fun and want your input. I am wanting to make a cheat sheet for myself, and family for my cages. Some information I am wanting to put on these would be common names, scientific names, average sizes (obviously that stuff I can figure out.) but the part I am having a hard time with is finding decent maps that show rages of each species/sub-species. Do any of you great knowledgeable people have good references, or places I can look for these? :):)

The Garter Snakes: Evolution and Ecology, is full of range maps and all the info. you could ever want.
https://www.amazon.com/Garter-Snakes.../dp/0806128208

Thank you so much!! :)