 Many of the books published were either translated or edited by Orfelin himself.He also published his own, original works, including "A Melody for the Spring" and "A Historical Poem" in 1765, "Latin Alphabet" in 1767, and "Latin Grammar" and "Slavic Alphabet" in 1768.A large number of the books printed in Theodosios's shop in Venice were purposefully mislabelled as printed in either Moscow or Sankt Petersburg publishing houses.