This from Fred McCahey:

Here are a few pics found on the internet of what might be Truck 8 & Truck 10. Pics by Don Feipel from illinoisfiretrucks.com where there are a lot of good photos, especially in the Down Memory Lane folder.
Chicago FD Mack Magirus ladder

Mack Magirus ladder. Don Feipel photo

Chicago FD Mack Magirus ladder

CFD Truck 10, Mack Magirus ladder. Don Feipel photo