The Electronic Frontier Foundation (EFF), the non-profit digital rights organization Barlow cofounded, said in a statement on its website that Barlow died in his sleep on Wednesday. When Barlow was 15, he attended Fountain Valley School in Colorado where he met fellow student Bob Weir and they became friends. Barlow began co-writing songs in 1971 with Grateful Dead founding member Weir, a teaming that would last until the Dead disbanded in 1995. "Cassidy," "Mexicali Blues," Black-Throated Wind" and "Looks Like Rain" are among the dozens of songs Barlow helped pen. He contributed four songs to 1989's Built to Last. The...