This is Simplicity 7990 sewing pattern from 1968. It features an above knee dress, with or without sleeves.
Size 14, Bust 36, Waist 27 inches, Hip 38 inches.
The paper envelope is in pretty good condition for it's age, with wear consistent to the way it was previously stored. The tissue paper pattern is uncut and in very good vintage condition. The paper instruction sheets are in very good vintage condition, slightly tanned from age.