Their maternal grandfather Thomas McCarter was head of the New Jersey Public Service Commission and a benefactor of Princeton University.
[6] Neltje Doubleday left New York and moved to Banner, Wyoming, where in 1966 she bought a 440-acre ranch on Lower Piney Creek.
She operated the working ranch in part for preservation of historic and land resources; the original stone house was built soon after the Spanish–American War.
[10] The inn has been owned since 1990 by the Sheridan Heritage Center, Inc.[11] In her art, Neltje has concentrated on painting abstract works.
In addition to creating her own artwork, Neltje has endowed and organized programs to encourage other artists and writers.
In January 2001 she created the private Jentel Foundation, to support and manage artists' residencies at her ranch in Banner.
Following the first pilot residencies of writers in 2001, the foundation had undertaken both renovation of existing buildings and new construction to create additional facilities to support the Jentel program.
The program has expanded to admit artists and writers for short-stay residencies which run eleven months of the year.