It was designed between 1929 and 1934 by Percival Gallagher, principal landscape architect for the Olmsted Brothers.

[4] The Riley Memorial Association first discussed buying the land for a convalescent park with the City of Indianapolis as early 1921.

[5] The garden was designed by Percival Gallagher, architect for the Olmstead Brothers, between 1929 and 1934 as a therapeutic greenspace for convalescence care.

[7] In 1947, the Nurses’ Alumnae Association donated the Robert Davidson sculpture known as Eve, which would become the centerpiece of the central pool.

[8] Ball Garden was listed on the National Register for Historic Places in 1996 under criterion c for its embodiment of masterful landscape architecture.