This from Jim Fisher:

These were taken by my father, Ralph O. G. Fisher who was a Chicago fire buff (past president of the 511 Club) and amateur photographer.  I am sure many of your subscribers will find them very interesting.

Chicago Fire and Police Thrill Show

Ralph O. G. Fisher photo

Chicago Fire and Police Thrill Show

Ralph O. G. Fisher photo

Chicago Fire and Police Thrill Show

Ralph O. G. Fisher photo

Chicago Fire and Police Thrill Show

Ralph O. G. Fisher photo