Markoff 2024, Stanford area April Third Movement Reunion (home). Markoff, John (3 May 2024). "In Remembrance: Ira Sandperl". April Third Reunion. Stanford area: April Third Movement.
Swenson 2018, Swenson's description of how deeply Ira read, and mentored other readers who came into Kepler's Books. Swenson, Lee (2018-03-09). "A Tribute to Ira Sandperl on his Birthday". The Boys Who Said NO! Film. Retrieved 2021-01-22.