Recipes: Edna's Nabisco Icebox Torte

In Gen's box, there are two pages of hand-written recipes for various tortes and cakes - it looks as though Gen was perhaps taking notes while assisting in the kitchen. The very top of the page says, "Aunt Edna Clark's" and then goes on to include this recipe for "Nabisco Ice Box Torte." Given the consistency of the notes, I believe all six of the recipes can be attributed to Edna. I'll publish all of them, but let's start with this first:

Edna's Nabisco Icebox Torte

3/4 lb. of Nabiscos* put through food chopper. Take 1/2 and put in bottom of pan, save 1/2 for top.

Cream 3/4 c. butter and 1 c. powdered sugar, add 2 beaten egg yolks. Beat 2 eggs whites stiff and fold in mixture. Pour this on top of Nabiscos in pan. Then add 1/3 c. chopped walnuts and on top of that either 1 quart of fresh strawberries or raspberries, or canned apricots or pineapple. Then top with whipped cream and cover cream with Nabisco crumbs. Put in ice box overnight.

*What are Nabiscos, you ask? According to Wikipedia, Nabisco Wafers were introduced in the early 1900s and were later sold in one form as Biscos, a sugar wafer originally containing a variety of flavored fillings. From what I can ascertain, as the Nabisco company added more and more types of cookie to its line, it changed the name from Nabisco wafers to Nilla wafers. Any food historians out there? Is this correct?