Edmonton Fringe Festival
More news as I have it, but I'll be doing several shows in Edmonton at this year's fringe festival there. (Unfortunately postponed due to COVID-19, but I expect to appear in August 2021.)
Small Press Distribution carries all four books: Volume 1, Volume 2, Volume 3, Volume 4. You can order directly from SPD, or any good indie bookstore can order on your behalf. You can also buy books directly from Ken Waldman at an event (and he's happy to sign copies). He also sells books the old-fashioned way via postal mail, though only takes cash and checks (he really is old-fashioned, but at least is easy to reach).