Columbia Boiler (Pottstown, PA) is sponsoring a seminar presented by PME's hydronics columnist Dan Holohan on September 9, 2003, on "The Lost Art of Steam Heating." The seminar will be held at the Sheraton Reading Hotel, 1741 Paper Mill Rd., Wyomissing, PA. Holohan will cover One Pipe Steam, Piping the Replacement Boiler, Handling Condensate, and Trapping Steam, along with a number of related topics. Attendees qualify for seven Continuing Education units. For more information, visit www.naohsm.org..