I must ask if what I recall is correct.
The three story building directly on the east side of MCR, is that the old Railroad Express Agency [REA] building?
It is between 14th & 15th Streets and on the south side Mararnette Street.
Been 40 plus years since I have been that way; in fact when I left Detroit, I left on a PennCentral Train heading west to Chicago and west from there.
Thanks for any input.