Kellogg Telephones Calendar: 28.75 x 20-5/8″ (21 x 13-3/8″ visible) Large, very high quality, beautiful stone litho paper sign for Kellogg Switchboard & Supply Co.’s wooden wall phones (Ketterlinus Lithographers) w/ original 1903 calendar tear sheets at bottom. Clean, bright and very attractive (basically displays as a strong C. 8++) w/ a few non-offensive faint horizontal snake lines from being rolled. Nicely framed and matted. Min. bid $100.