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This broadsheet with maps titled "Revised Map of the Property of Thomas L. Rushmore Esq. situated in the town of Mamaroneck, Westchester Co. New York" and "Orienta Point and Mamaroneck, Westchester Co., N.Y." is drawn from the work of Surveyor Fletcher Herdt of Mamaroneck, New York.  

This map provides a detailed layout of a subdivision within Mamaroneck, Westchester County, New York. The subdivision is carefully plotted, showing individual lots, streets, and avenues. The names of the streets include familiar ones like Walton, Spencer, and Delancey, drawn for the marketing and sale of these lots in about October of 1892.

The second map on the reverse side of the broadsheet situates the subdivision within the larger area of Orienta Point and Mamaroneck. This broader map contextualizes the property, showing its location relative to the surrounding geography. It includes detailed features such as water bodies, natural landmarks, and other significant properties, providing a comprehensive view of the area's development potential, illustrating the prime location of the subdivision near the picturesque Orienta Point. 

Both maps are adorned with vignettes of notable buildings and landmarks in the area, which add a layer of visual appeal and historical significance. These illustrations include the residence of the late Charles J. Osborne, the Depot of the N.Y.N.H. & H.R.R. Co., St. Thomas Episcopal Church, Holy Trinity Catholic Church, and a Methodist Church, giving viewers a glimpse into the architectural style and cultural heritage of Mamaroneck.   

During the late 19th and early 20th centuries, Westchester County was undergoing significant suburbanization, with developers capitalizing on the proximity to New York City and the idyllic setting of towns like Mamaroneck. These maps reflect the era's real estate dynamics, showcasing the careful planning and promotion required to attract affluent buyers to new suburban developments. 

Thomas L. Rushmore was a prominent figure in Mamaroneck, New York. He served as an officer in the 37th New York Volunteers and later entered the dry goods business. After retiring, he established his home at Orienta Point, where he achieved considerable success in real estate.

Rushmore was a brother-in-law to George I. Seney, founder of the Seney Hospital in Brooklyn. In Mamaroneck, Rushmore served as village president and president of the Board of Education. His wife was the president of the Mamaroneck Free Kindergarten. He was also the superintendent of the Methodist Sunday school for 35 years.