I am also in the Seattle area and have been a cartridge collector for a while. Don't have a lot of boxes, but I know of others who might.
Are you an IAA member?
Tom
425-785-0093
My late husband passed 16 years ago. I have a box of Remington 44 S&W Special, 248 grain, lead. He bought it from Oshman's, a now defunct sporting goods store in Houston, and paid $15.40. The box is full and in great condition except for the Oshman's price sticker on one end.