This week 90 years ago, the Migratory Bird Conservation Act, otherwise known as the Norbeck-Andresen Sanctuary Bill, was passed. Bronx Zoo Director William Hornaday campaigned for nearly a decade for the bill, which laid the foundation for the creation of protected areas for birds. Here we have a 1928 letter from Hornaday to Norbeck as well as an article he wrote about the bill, both showing his characteristic passion for wildlife conservation.

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