On Friday, the law firm of Steven J. Baum threw a Halloween party. The firm, which is located near Buffalo, is what is commonly referred to as a “foreclosure mill” firm, meaning it represents banks and mortgage servicers as they attempt to foreclose on homeowners and evict them from their homes. Steven J. Baum is, in fact, the largest such firm in New York; it represents virtually all the giant mortgage lenders, including Citigroup, JPMorgan Chase, Bank of America and Wells Fargo.

The party is the firm’s big annual bash. Employees wear Halloween costumes to the office, where they party until around noon, and then return to work, still in costume. I can’t tell you how people dressed for this year’s party, but I can tell you about last year’s.

That’s because a former employee of Steven J. Baum recently sent me snapshots of last year’s party. In an e-mail, she said that she wanted me to see them because they showed an appalling lack of compassion toward the homeowners — invariably poor and down on their luck — that the Baum firm had brought foreclosure proceedings against.

When we spoke later, she added that the snapshots are an accurate representation of the firm’s mind-set. “There is this really cavalier attitude,” she said. “It doesn’t matter that people are going to lose their homes.” Nor does the firm try to help people get mortgage modifications; the pressure, always, is to foreclose. I told her I wanted to post the photos on The Times’s Web site so that readers could see them. She agreed, but asked to remain anonymous because she said she fears retaliation.