the-story-of-the-exposition-being-the-official-history-of-the-international-celebration-held-at-san-francisco-in-1915-to-commemorate-the-discovery-of-the-pacific-ocean-and-the-construction-of-the-pan Post date May 26, 2023 Tags Maria Montessori - Biographic sources, Panama-Pacific International Exposition (1915, San Francisco, California) ← mabel-bell-alexanders-silent-partner-z8flrhxt → a-treasury-of-the-worlds-great-heroines-7bx5esvn