Three Waltzes in One
Longways Country Dance, triple minor
A Selection of Elegant & Fashionable Country Dances, Reels, Waltz's &c. Book 12
Wheatstone & Voight, c. 1817

[some lack of clarity on what "waltz turn" means here)

8 bars	The three couples set to partners
8 bars	The three couples waltz turn their partners
8 bars	The first couple waltz one and a half Pousettes with the second couple
8 bars	The first couple lead through the bottom and top couples
Repeat whole dance from progressed position