The name is icebox cake (not refrigerator cake) because it was invented in the 1920s as a way to promote the icebox appliance to housewives & families. Nabisco chocolate wafers and layers of cream were one of the first to be originated & enjoyed. It was very popular in the 30s & has returned to glory recently with trendy & even gourmet versions. It is also known as a ripple cake, zebra cake, refrigerator cake, graham cake, or log in other countries.