Are you looking for themed coloring books or just custom-made coloring books in general. Check out Tree-Free, they just recently created a Boston, MA. themed coloring book. D&S Marketing Group can work with you in creating your own themed coloring books and/or calendars. Contact us at (412) 767-4030 and let us discuss what we can Name Drop for you. (Territory: Western Pennsylvania)
Online article: http://www.bostonmagazine.com/arts-entertainment/blog/2017/01/23/boston-themed-coloring-book/
Here is an example of one of our customers in Erie, PA.:
See: Tree-Free – Doodle Life
D & S Marketing Group 