(He went at night [p. 156-180].) The Caulfields lived in an apartment on the 12th or 13th floor on 71st Street,
with at least one view of Fifth Avenue (pg. 67, 88, and 118). This building
fits the bill excellently: 3 East Seventy First Street. (The
second and third
images are the same: the third is closer in and includes
my reasons for choosing this building
and a description of the general neighborhood.)