This chapter does not apply to any county as defined in Title 36 RCW, any city or town as defined in Title 35 RCW, any school district or educational service district as defined in Title 28A RCW, or any library or library district as defined in Title 27 RCW, in respect to materials printed in the county, city, town, school district, educational district, library or library district facilities when the materials are used solely for county, city, town, school district, educational district, library, or library district purposes.