Decatur Township was the first Marion County Township outside Center Township to receive a branch library. Opening on August 9, 1967 and located in a storefront location in the Marwood Shopping Center, 3373 Kentucky Ave., it was first named the Marwood Branch Library. While serving the Mars Hill and Maywood neighborhoods north on Kentucky Ave. the branch also served the established rural areas further south in Decatur Township such as Camby, Valley Mills and West Newton. Circulation averaged around 80,000 to 90,000 annually while the collection size was around 5,500 books.