Philadelpha for Philadelphia - somebody almost got to the end of the word and then ran out of luck. This is one of 10 variations of Philadelphia that show up in the list of high probability words on the Main Page of library typos at http://faculty.quinnipiac.edu/libraries/tballard/typoscomplete.html
The others are Phiadel*, phialdel*, Philadelh*, Philadelphi, Philadelpia, Philadeph*, Philadl*, Phildel*, and Philidel*. We suspect that librarians in the Keystone State have their work cut out for them. Some other day, we'll talk about the different ways that people have spelled Pennsylvania.