We have a local agent who specializes in Mid-Century homes and is successful. He advertises in those specialty magazines, he markets specifically to those neighborhoods, he writes articles about that era of homes, at his open houses he has books about Mid-Century design displayed, he has a newsletter with just those kind of homes and information, etc. You could organize historic home tours, host lectures with architectural experts, etc. You may not sell as many homes overall but you will probably enjoy it more.