Steve Strong, in researching some correspondence, turned up a nice article with photos about Henry Alvah Strong. Elizabeth Jeffries, a student at the University of Rochester, introduces her article:
I chose to write about the Strong Mausoleum because I am a member of the Strong family. My grandmother is Ann Emerson Strong Garrett, the daughter of Pritchard Hopkins Strong. I knew very little about her parents because they died when she was very young, but through research I have learned a great deal about how they lived. I chose to write about Henry Alvah Strong and Augustus Hopkins Strong as well, because they were large contributors to both Rochester and other communities.
Here is the article online: https://www.lib.rochester.edu/IN/RBSCP/Epitaph/ATTACHMENTS/27_3.pdf
Thanks, Steve, for finding this!