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Portolan Chart of the Mediterranean Region. Bartolome Olives, 1583. Osher Collection.

Preserving the Past, Teaching the Present: Inside the Vault at Osher Map Library

Inside the vault at USM’s Osher Map Library, nearly half a million rare maps are preserved with painstaking care, then carried out to the table for students to study by hand. Keep reading to see what is kept inside, and how centuries-old maps are still teaching today.

Close-up of delicate pink flower buds emerging on tree branches against a soft spring sky, with bold "April" text overlaid in white.

Monthly Roundup: April

Welcome to the Monthly Round-Up for April 2026! As spring arrives and campus comes alive, this month is loaded with events, activities, and experiences you won’t want to miss. Keep reading to discover what’s happening on campus and across Southern Maine this month.