Here are a few Chicago charts. More to come.
Chicago Band (15)

Individual songs:
Beginnings - Robert Lamm
Saturday In The Park - Robert Lamm
Just You & Me - James Pankow
Colour My World - James Pankow
Feelin' Stronger Every Day - James Pankow-Peter Cetera
Questions 67 and 68 - Robert Lamm
Old Days - James Pankow
If You Leave Me Now - Peter Cetera
Does Anybody Really Know What Time It Is - Robert Lamm
Make Me Smile - James Pankow
You're The Inspiration - David Foster-Peter Cetera
Dialogue, Pts 1 and 2 - Robert Lamm
(I've Been) Searchin' So Long - James Pankow
Hard To Say I'm Sorry - David Foster-Peter Cetera
25 or 6 to 4 - Robert Lamm