https://www.gramercyparkblockassociation.org/history/buildings/19-gramercy-park-south/
19 Gramercy Park South | Gramercy Park Block Association
The story of 19 Gramercy Park South: a home built for a Park Trustee, Mamie Fish’s celebrated entertaining, and the Sonnenbergs’ thirty-seven-room mansion.
gramercy park southblockassociation
https://www.gramercyparkblockassociation.org/stories/23-gramercy-park-south-construction/
Construction concerns at 23 Gramercy Park South | Gramercy Park Block Association
Read “Construction concerns at 23 Gramercy Park South,” from the Gramercy Park Block Association’s collection of neighborhood stories and letters.
gramercy park southconstructionconcernsblockassociation