Here is a stylish drawing captioned "The Amen Corner" of the Fifth Avenue Hotel.
I googled "Fifth Avenue Hotel", and quickly found:https://en.wikipedia.org/wiki/Fifth_Avenue_Hotel
But that one was open from 1859-1908 on 5th Avenue at 23-24th Street, while 'mine' was on 5th Avenue at 9th Street ... never mind that 'my' postcard was postmarked in 1941!
Reading further about the 1859-1908 Fifth Avenue Hotel, we find:
"... From a corner nook in one of the public rooms, which he dubbed his "Amen Corner", Republican political boss Thomas Collier Platt controlled patronage in New York City and State for a few years in the 1890s; here he held his "Sunday School", where projects did not go forward until they had his "amen" ...
"... The old hotel's name was taken up by a Fifth Avenue Hotel at 24 Fifth Avenue ... later converted to apartments ..."
Apparently, the 'new' Fifth Avenue Hotel decided to take on the history, and not just the name ... hence the artwork on the postcard.
I have a PDF of a New York Times article, Fifth Avenue Hotel Closes at Midnight
, dated 04/April/1908, which is a treat to read.https://en.wikipedia.org/wiki/List_...in_Manhattan
... List of former hotels in Manhattan
That's not much of a list but, then, as I have not contributed any names, perhaps I should not contribute my criticisms, either.
I cannot make out the last name of the artist (Casner?), and got nowhere googling that
, to boot.