OAKLAND — The last known member of the Abraham Lincoln Brigade of American volunteers that fought in the Spanish Civil War will be celebrated at a memorial from 1 p.m. to 3 p.m. May 21 at the Niebyl-Proctor Marxist Library, 6501 Telegraph Ave. in Oakland just across the Berkeley city line.

Delmer “Del” Berg, 100, died in February at his home in Columbia in the Sierra foothills. He was the subject of an obituary in The New York Times in March, available at nyti.ms/23Xs8lB, and an Op-Ed piece, “Salute to a Communist,” by Republican U.S. Sen. John McCain of Arizona in The New York Times later that month, available at nyti.ms/25bn82D.

Berg also was remembered in March in “The Volunteer,” a publication founded by veterans of the Lincoln Brigade; that obituary is available at bit.ly/1NyLVpv.

Berg was among about 3,000 Americans who fought for the Spanish Republic against the totalitarian forces of Francisco Franco. More than 800 of the Americans died in the war, which lasted from July 1936 to April 1939. The first American fighters assembled in Spain in early 1937.

Many later settled in the Bay Area and remained lifelong political activists, and even as their numbers dwindled, they continued to gather at reunions and political rallies in the East Bay well into the current century.

Contact Tom Lochner at 510-262-2760. Follow him at Twitter.com/tomlochner.