He remained the principal shareholder and manager of these banks until their collapse in the 1900s .
In the 1870s and 1880s Polyakov founded five more commercial banks ( in Moscow , Oryol , Saint Petersburg and Odessa ) and two mortgage banks ( Moscow , Yaroslavl ) .
Polyakov remained the principal shareholder and manager of these banks until their collapse in the 1900s .
In the 1870s and 1880s Polyakov founded five more commercial banks ( in Moscow , Oryol , Saint Petersburg and Odessa ) and two mortgage banks ( Moscow , Yaroslavl ) .