First of all, I’m thrilled that I’ve managed to spark an interest in policy history.
Unfortunately, I don’t have an online course, although that’s an interesting idea. (Maybe if I ever have some free time and finish all of my competing side-projects, I might do something like that.) I teach at CUNY’s Murphy Institute in NYC.
There are many institutions that offer the history of public policy, although it can be a bit difficult to find which history departments have sizable programs. (Or it least it was when I was applying to grad school back in the day.) I would recommend cross-referencing various universities’ history departments with the Policy History Conference’s program or the Journal of Policy History’s back issues, to find a department that has multiple scholars, because those places will offer more courses.