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