Eric Johnson’s Iota Press began life as a venue for teaching and sharing his love of old-style letterpress art and books. It quickly grew into a collective that established itself as the North Bay Letterpress Arts nonprofit group in 2015. Currently housing 12 artists and printmakers in a 1,600-square-foot shop, Iota Press hosts the North Bay Letterpress Arts Holiday Open House this weekend that includes art and books for sale, live poetry reading, tours of the shop and a demonstration of the Gutenberg-style press, and a raffle of handmade gifts. Sunday, Dec. 3, 925-D Gravenstein Hwy. S., Sebastopol. 1pm to 5pm. Free admission. northbayletterpressarts.org.