Hey, I'm a portland student, and can safely say a few things: call Newspace. talk to Laura Valenti or one of her proteges and see if they want them. Pacific Northwest College of Art is already stocked on enlargers for the school, but the head of our photo department, Sally Schoolmaster, would make sure they found good homes with students. Same deal goes for Oregon College of Art and Craft, they just remodeled their darkrooms and got a boatload of new stuff from what I hear. Still, though, every now and then a student is looking for a good enlarger for themselves.
Another thought is taking them up to Blue Moon Camera & Machine in St. Johns. They probably wont buy them from you outright, but they'll probably consign them for you, and their consignment terms are pretty darn good. Other place you could go depending on where you are is Hollywood Camera up on Sandy Blvd, just north of I-84. Fred is a fantastic guy and might even trade you the enlargers for something you need.
Check around, we're a funky enough town that somebody will want them. If nothing else, send me a PM and I'll take them from you and bring them over to PNCA and put a big 'free to good home' sign on them.
But please, please don't scrap them.