First, I went through my pictures of my grandfather, Harry, to see if he had a ring or any other identifying symbol of his mason membership. I did not find anything.
My grandparent's lived on 484 Cass Avenue (which is 3000 Cass Avenue, today). It is between Charlotte and Temple Streets. They use to tell of going to Cass Park to sleep on hot, summer nights. They figured that wasn't a good place to raise a family and moved to Royal Oak, Michigan around the time my father was born. I imagine my grandfather taking a short walk to his meetings. He would have been able to see the lodge from his house.
(Detroit, Michigan renumbering system began on 1 January 1921. The 1920/21 Polk City Directory shows both the old number and the new number. Steve Morse has a transcription of the old and new numbers as they appeared in the directory. Burton Historical Library has Detroit City Directories in their collection.)