There are a very interesting founds in the Central historical archive of Moscow - all student's private files was kept here.

I wrote only list of these files of the students of the Moscow technical college named Komissarov, that graduated my grndfather in 1906.

From CHAM.

Our ancestors are buried Here. Today, visiting native tombs, I have bought the book " Sacred Vagankovo " and have decided to place here as endurances from it (circulation is only 3000 copies), and photos of almost forgotten tombs which, can, someone searches...

That book was published in 1998 by only 500 copies.
There are 225 names of Moscow merchants and manufacturers. If you find ancestry here - ask me about them on my forum.