Check out the Classified sections of "official" County Newspapers. Here in Parker it's the Pioneer, maybe the Havasu Herald or a Kingman paper for Mohave County.
We don't really have "foreclosures" here in AZ. When you get a mortgage you actually give a Trust Deed to the finance company. When it's defaulted, the Mortgage company holds a "Trustee's Sale", which by law has to be published in the official County Newspapers for a certain period of time, I think 45 days. The Trustee Sale notice has the auction date and location, usually "On the Steps of the County Courthouse". It also has the legal description and common address of the property.
At any time before that auction is final, including during it, the trustor (person who defaulted) can pay past payments and fees, and cancel the sale.