Still in the process of confirming but, I just may have found a picture from inside the Little Gourmet Restaurant which was converted from an original Ranch House on the Hotel property. This facility was only open a little over four months until the Gourmet Restaurant opened on February 15, 1956. If the date written on the picture is correct, this is the rarest picture I have ever seen from the Disneyland Hotel's history. I had a grand total of zero pictures from inside this facility...keep in mind, I probably have close to 10,000 pictures in my collection. Thanks (again) to Kris Van Hook whose grandfather was the first banquet/catering manage and maitre' d at the Disneyland Hotel and also, one of the first employees hired there. Thank you so much Kris for sharing this wonderful find.
Here is an exterior picture of the facility, it's the building in the foreground, lower middle-center with the trees around it:
Here is the business card of Mr. Lenti: