The full video of the New School event on The Letters of Joe Hill is available at https://www.youtube.com/watch?v=VowR8RpYjoA
The Graphic History Collective held a Joe Hill coloring contest (the deadline for which passed before we learned of it). However, there is a free commemorative coloring poster available for download.
Paul Buhle reviews The Letters of Joe Hill and the reissue of Franklin Rosemont’s Joe Hill (a wide-ranging exploration of his legacy and influence).
Dissent magazine’s podcast features an interview with Letters of Joe Hill co-editor Alexis Buss, and some Joe Hill songs (at the 10 minute mark)
A collection of articles on the trial (1914) from the Salt Lake Tribune is available as part of a rather hostile website.