John Lamson had been a partner of Henry Ranlet in 1787. However, by 1790, John Lamson had severed the partnership and opened a printing office of his own in Exeter.
The Republic of the Israelites (Portsmouth: Lamson and Ranlet, 1788)
A Short Introduction to Latin Grammar (Exeter: J. Lamson, 1794)
Lamson took Thomas Odiorne as his associate. Odiorne had no experience as a printer, but was considered to have literary taste and ability. Their partnership was short-lived.
Improvement of the Mind (Exeter: J. Lamson and T. Odiorne, 1793)