1963 VINTAGE Flow Chart & Block Diagram Graph Paper. Pad of 75 Sheets. Item #4-112 PC REV. 10-1-63. 11″ × 15″. 16 squares per inch. RARE. Be sure to click on the video. Links to other graph paper items: Printer Spacing Worksheet – https://www.ebay.com/itm/326296874837CRT Screen Layout Worksheet – https://www.ebay.com/itm/326296876192COBOL Coding Form – https://www.ebay.com/itm/326296876433