Bollettino dell'Osservatorio della Regia Università di Torino, 1878 (vol. 13)
A bulletin from the Turin university observatory in 1878, issued by the astronomical observatory of the Regia Università di Torino for scholars and meteorologists. Its pictures are printed charts plotting daily barometric, thermometric, vapour tension and relative humidity lines across the month, in fine black ink on ruled grids with dense zigzag traces a designer could borrow for data-driven patterns.
