This series contains Chang's letters from working as a secretary for the Tsung Tsin Benevolent Association, journals from the Soo Yuen Benevolent Association, and reports, publications, and correspondence from the Two Bridges education programs. The series also includes Chang's correspondence with and photos and publications from various community groups and organizations, including the Museum of Chinese in the Americas, Lower Eastside Neighborhood Association, Hamilton-Madison House and Chatham Green Cooperative.The last two subseries contain yellow pages of New York City, tourist guides, restaurant menus and books on education.