Historical clue formulations

• Home to "a real pipperoo" of song — 2024-11-16
• Midwest city in the title of a 1942 Glenn Miller #1 hit — 2020-10-30
• Starting point of a train trip to Timbuktu, in song — 2015-01-23
• Site of Western Michigan University — 1997-04-30
• Where Edna Ferber was born — 1997-03-14