WWI Draft Registration Cards from ancestry.com ...

A search for John C. LAKE shows that he was born June 24, 1883.
John's permanent home address is Lake Hopatcong, Morris, NJ.  However,
his present occupation is a pipe fitter at B. F. Shaw Company out of
Wilmington, Delaware.  Next of kin is Lillian V. Lake.  The card gives a
brief physical description of John as tall, medium build, with dark brown
hair and blue eyes.  (Date of this WWI draft card is September 3, 1918.)


From the New York Times Newspaper - December 17, 1942 ...

MRS. MAHLON SMITH
East Orange, NJ - Dec 16th
Mrs. Charlotte SMITH, who was the proprietor of the Sunnyside Hotel at
Nolan's Point, Lake Hopatcong, for many years, died today at the age of 90
in the home of her son, John C. LAKE, after a long illness.  Mrs. SMITH
went to the resort (that is, Lake Hopatcong) with her first husband,
Jacob LAKE, to operate the American House in Great Cove.  Later she took
over the Sunnyside Hotel.  Her second husband was the late Mahlon SMITH.
Besides her son, she leaves a sister, Miss Ella Felmy of Round Valley,
NJ, and four grandchildren.


URL for the Jefferson County Bi-Centennial ...
http://jefferson.bicentennial.org/about/history11.html

There, you will see a description of the Sunnyside Hotel, built by
Mahlon SMITH.  Keep digging, and you will find a couple of nice old
images of that place.