This is a collection of records of the participation of the Academy of Natural Sciences of Philadelphia in the observance of Earth Week in 1971. Materials include: schedules of events; newspaper articles (copies and clippings); flyers, programs, and brochures; photographs of the installation of exhibitions; press releases and memos; a newsletter from the Franklin Institute; an Earth Week button; and receipts for advertising. The collection also includes a brochure for Earth Day, 1970.