's-Gravenhage, Gebr. Langenhuysen, giant format book, with all maps (chormolithograph) belonging to the advice concerning floods by the commoittee installed in 1893, with bookplate from the library of Prof. Dr. G.P. van de Ven. Gerard van de Ven (1941-2017) was a prominent Dutch scholar, author and professor at the Universiteit van Amsterdam. He was specialised in waterstaatsgeschiedenis (history of water management) and historical geography. He wrote many books, articles and contributed to many publications.