Come See What We’ve Been Making: Open Studio Tour Posted on May 9, 2019 by admin Washington Glass School will be part of the 15th Annual Open Studio Tour (OST 19) this Saturday, May 11th, from 11am til 5pm. Come see what we’ve been working on!! #OST19 This entry was posted in open house, open studio and tagged #OST19 by admin. Bookmark the permalink.