The public is invited to a giant open house celebrating the 20th year of West Medford Open Studios, a free arts event that lets the public see the artists in the city, celebrating the creativity and skill that many take for granted in Medford. WMOS showcases the talents of more than 90 artists from Medford and surrounding communities. There will be paintings, sculpture, pottery, photographs, woodwork, drawings, fabric arts, blown glass, and jewelry to see — as well as the opportunity…