Here are three more major contributors: Sosnowski, Farel and Petersen. The really big contributor is Alpine Bank and its CEO, Rob Funderburg.
The above expenses are available at: http://www.elections.il.gov/CampaignDisclosure/D2Quarterly.aspx?id=497505
There are very limited records for Mr. Chamberlains opponents for the mayoral election:
The above is taken from: http://www.elections.il.gov/CampaignDisclosure/CandidateSearch.aspx?txtLastName=sanderson&txtFirstName=mark
