1 | appointment of Samuel and Johannes Luchtmans as municipal printers

2 | apointment of Samuel and Johannes Luchtmans as printers of the University of Leiden

3 | Transfer of the firm by Samuel Luchtmans and Cornelis Musschenbroek to their sons Samuel and Johannes

4 | Contract between Samuel and Johannes Luchtmans

5 | Johannes Brill becomes a partner in 1813

6 | Incorporation of Bodel Nijenhuis in the firm

7 | Membership of the Association for the Advancement of the Booktrade, 1821

8 | Termination of the firm, 1847-1848