Katrina was at one of the GC TOGAs a couple of years ago; can't remember if you were there then. She's an expert on 19th-century clothing and teaches anthro at one of the community colleges, and is the only one I know who has actually made clothing on a Grover & Baker 2-thread chainstitcher.
Could the other person have been Donna Kohler? She's been to at least one GC TOGA too. Alyce was there once too, but I don't know what has happened to her. Hope everybody is planning to come to the next one this fall at Cathy's new house!