Humboldt’s hop history is on tap for this month’s Humboldt County Historical Society Program, Mercantile Brewing in Humboldt County, happening Saturday, April 3 at 2:30 p.m. via Zoom. Presented by Michael Berry, this journey back in time chronicles every commercial brewery known to have operated in Humboldt County from 1854 to the present day — and shows how early brewers struggled in a competitive market. There are limited slots. Sign up for the lecture by 5 p.m. April 2 at www.humboldthistory.org/libraryprogram.