Only by mail or at tour local post oiffice. Philadelphia passport office is only for getting passport in emergency. Look up on web which post office accepts passport applications
They can however issue a passport, as soon as, 3 days, after you complete and turn in all your paperwork! But you have to show proof of trip and dates your leaving. I just had to do it for my daughter - went in on a Friday with all my paperwork, and was able to come back that following Monday and she left on Tuesday!
If there is no rush and apply as routine application probably 3 to 4 weeks.
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