I've written before about using maps as a way to find out more about your ancestor's religion. Maps pinpoint religious migration routes, outline religious communities and more. Here's yet another example of what you can find in a map collection.
The David Rumsey Historical Map Collection has more than 22,000 maps and images online. These maps cover the world and various historical eras.
One of the digitized images is from the book Town and city atlas of the state of Connecticut. Compiled from government surveys, county records and personal investigations. D. H. Hurd and Co: Boston, 1893. This book includes drawings of various buildings including churches. One of the churches included in this work is the St. Francis Church and Rectory in Naugatuck, Connecticut. However, it is not the only one.
It's a good idea to check all kinds of sources when researching your ancestors.Using images of the buildings where they worshiped can help your readers better picture your ancestor's life in a written narrative. In cases when you lack photos of an ancestor, images of the places they were involved with can be a substitution. Check out the David Rumsey Historical Maps site and search on the places that your ancestor lived. You might just find something that helps tell the story of your ancestor.
(Please note that the website does include copyright information for their materials. They also provide an option to purchase images).