Dependent types: de Brujin (1967) Curry-Howard: Curry (1934, 1958), Howard (1968) MLTT: Martin-Lof (1972) Polymorphic lambda-calculus: Girard (1972/3), Reyno

Dependent types: de Brujin (1967) Curry-Howard: Curry (1934, 1958), Howard (1968) MLTT: Martin-Lof (1972) Polymorphic lambda-calculus: Girard (1972/3), Reynolds (1974) Effect systems: Gifford/Lucassen (1986) Calculus of constructions: Coquand/Huet (1988) HKTs: Girard (1971) Type classes: Kaes (1988) Dates are imprecise and from memory.