Mistakes were made

Newsday reports on an interesting lawsuit by a collector of African-American art who claims he was "duped into selling a cache of previously unknown Diane Arbus photographs" for a total of $3,500. The buyer's lawyer calls the suit "frivolous," but if the plaintiff can show that the buyer did in fact know the works were by Arbus, he would seem to have a pretty good claim of "unilateral mistake."