http://www.ledzeppelin-reference.com/geekbaseweb/setpage.aspx?showid=340
https://www.setlist.fm/setlist/led-zeppelin/1972/the-spectrum-philadelphia-pa-7bd61ad0.html
A lot of sources on this show seem to contradict each other. I'm assuming the people who released the tape moved Bring It On Home onto the first disc so it would fit?