- Language and languages--Study and teaching--History--Congresses (5)
- Missions--Linguistic work--Congresses (5)
- Grammar, Comparative and general--Morphology--Study and teaching--History--Congresses (3)
- Grammar, Comparative and general--Syntax--Study and teaching--History--Congresses (3)
- Lexicography--Congresses (2)
- Grammar, Comparative and general--Phonology--Study and teaching--History--Congresses (1)
- Indians--Languages--Congresses (1)
- Language and languages--Orthography and spelling--Study and teaching--History--Congresses (1)