First stone laying for the Willemssluis; 1820; Festive first stone laying of the Willem I lock or Willemssluis in Amsterdam-Noord giving access to the Noordhollandsch Kanaal from the IJ near Amsterdam on May 6; 1820. In the middle a large tent it served as the office for inspector general Jan Blanken. Dozens of people around it. In the background houses and some barns. Rear left water with the sail of a ship that rises above the dike. With the drawing an access pass in the name of G. Lamberts as 'member of the Subcommittee for rescue and care in Noord-Holland'; February 1825 in Buiksloot; Amsterdam; Willem I Sluis; Noordhollandsch Kanaal; Jan Blanken Jansz.; Gerrit Lamberts (signed by artist); paper; pencil; chalk; watercolor (paint); brush; h 235 mm x w 420 mm h 100 mm x w 159 mm