- Map folded twice and dam. portions and creases in lower margin.
= Dating of the map is based on the year "1766" mentioned in the accompanying manuscript for a possible proof project for the strengthening of the shores of the lake. The manuscript further contains the estimate of the costs for the work to be done in this project.
AND 10 others, of i.a. Friesland, de Horensche Hop (1883) and Ontwerp van een Sluishoof in den Muider Zeedijk (...) (lithogr., 1874).