Interesting topic. I'm sure you must've come across the following sites:
http://www.ushistory.org/laz/history/sell5.htmhttp://www.findagrave.com/cgi-bin/fg.cgi?page=vcsr&GSvci...http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GScid=2...;
Since the Commonwealth took over, how about the State Archives in Harrisburg?
sic"[T]he Board of Health of the City of Philadelphia operated the facility and enforced the local quarantine regulations until the Commonwealth of Pennsylvania assumed authority for enforcing quarantine regulations in 1893.
Good luck,
Frank