Playford's Dancing Master
The English Dancing Master by John Playford was first printed in 1651. This edition contained the tunes and (at times limited) instructions for 105 dances, and is the main source for English Country Dance in the SCA. The book was reprinted many times over the next 150 years, with new dances being added and old ones being removed as fashions changed.
Playford in the SCA
Despite the fact that Playford's book is out of period, many dances from first addition are danced within the SCA. There are even a few dances that only appear in later editions, such as "Strip the Willow", that are danced in some regions.