Historical clue formulations

• *Philadelphia university, familiarly — 2023-04-06
• One with bills piling up? — 2014-03-23
• Note taker? — 2008-04-18
• You might give one the slip — 2001-05-18
• See 54-Down — 2001-04-13
• Person with lots of bills — 2000-01-11
• Bank employee — 1999-07-20
• Person who handles bills — 1999-04-05
• Bank employee — 1998-09-07
• Penn pal — 1997-08-23
• Manhattan Project physicist — 1997-03-13
• Person with many bills — 1994-03-18