Letter A as designed and published by Fra Luca Pacioli: De Divina Proportione, Paganino dei Paganini, Venice 1509. https://creativecommons.org/publicdomain/mark/1...
Letter "A" from Fra Luca Pacioli's Divina Proportione, Paganino dei Paganini, Venice 1509. Source image: Image:Fra Luca Pacioli Letter A 1509.jpg, converted...
