Description:
Page 36, location: https://derpibooru.org/images/3493362
Page 37, Maretime bay locations: https://derpibooru.org/images/3493364
Page 38, Bridlewood and Zephyr Heights Locations: https://derpibooru.org/images/3493365
Page 39, beyond Equestria: https://derpibooru.org/images/3493368?q=uploader_id%3A690876
Page 40 Skyros, Old Equestria, some other ideas: https://derpibooru.org/images/3493369?q=uploader_id%3A690876
Page 40a, Sea ponies, Bat Ponies, Flutterponies, and Aurora Ponies (early version of the Auroracorns?): https://derpibooru.org/images/3493370?q=uploader_id%3A690876
More screenshots coming in..