. ▁He ▁taught ▁his ▁last ▁course ▁at ▁Brown ▁in ▁ 1 9 9 0 . ▁ ▁Writing ▁ ▁Brown ▁Cor pus ▁After ▁joining ▁the ▁fac ulty ▁of ▁Brown , ▁Francis ▁took ▁a ▁course ▁in ▁computational ▁lingu istics ▁from ▁Henry ▁Ku č era , ▁who ▁taught ▁as ▁a ▁member ▁of ▁the ▁S lav ic ▁Department ▁staff . ▁In ▁the ▁early ▁ 1 9 6 0 s , ▁they ▁began ▁collabor ating ▁on ▁compiling ▁a ▁one - mill ion - word ▁computer ized ▁cross - section ▁of ▁American ▁English , ▁which ▁was ▁entitled ▁the ▁Brown ▁Standard ▁Cor pus ▁of ▁Pres ent - Day ▁American ▁English , ▁but ▁commonly ▁known ▁as ▁the ▁Brown ▁Cor pus . ▁The ▁work ▁was ▁compiled ▁between ▁ 1 9 6 3 ▁and ▁ 1 9 6 4 , ▁using ▁books , ▁mag az ines , ▁newsp apers , ▁and ▁other ▁edited ▁sources ▁of ▁inform ative ▁and ▁imag in ative ▁pro se ▁published ▁in ▁ 1 9 6 1 . ▁Once ▁completed , ▁the ▁Brown ▁Cor pus ▁was ▁published ▁in ▁ 1 9 6 4 . ▁Each ▁word ▁in ▁the ▁cor pus ▁is ▁tag ged ▁with ▁its ▁part ▁of ▁speech ▁and ▁the ▁subject ▁matter ▁category ▁of ▁its ▁source . ▁D iss em in ated ▁throughout ▁the ▁world , ▁the ▁Brown ▁Cor pus ▁has ▁served ▁as ▁a ▁model ▁for ▁similar ▁projects ▁in ▁other ▁languages ▁and ▁as ▁the ▁basis ▁for ▁numerous ▁scholar ly ▁studies , ▁including ▁Francis ▁and ▁Ku č era ' s ▁Fre quency ▁Analysis ▁of ▁English ▁Us age , ▁which ▁was ▁published