Dan McInerney found several links which offer images and information about the current and past Chicago fire boats.

Here are some websites that have some info on CFD’s former boat fleet.
Pictures of current/former boats:
Info and location of the Joseph Medill:
The Medill can be seen on Google Maps Street View at the corner of 1st Ave and 6th street in Escanba, MI. (682 1st Avenue North, Escanaba, MI)
And the Fred Busse:
The Medill can be seen on Google Maps Street View at the corner of 1st Ave and 6th street in Escanba, MI. (682 1st Avenue North, Escanaba, MI)  ma:45.74684688874211//-87.0567671//14//hybrid:Joseph Medill
Door County Fireboat Cruises

Snapshot of the Door County Fireboat Cruises website featuring the Fred Busse.

Fred L. Schlaeger fireboat - Google Maps

Satellite view from Google Maps of the Fred L. Schlaeger docked at the water filtration plant.