Posted 6 years ago
Glass washboards were used during WWII as metal was in short supply. They were not all that popular as being made of glass they tended to break.
This was made by Howard Woodenware of Kent Washington. I can't find any information on the company.
This is displayed next to my ringer in the upstairs bathroom. I haven't tried to use these as I have a modern washer and dryer stashed away in the basement.