According to legend, this monument of keyboard literature was written for 1 of Bach's students, who played it to soothe and entertain his insomniac master. Starting the theme with a stately Aria, the "Goldbergs" travel through 30 variations, exploring thematic possibilities while showcasing the composer's brilliant sense of motivic possibilities. Reprint of the Gesellschaft, Leipzig, 1853 edition.
Here's a sample of other books in this Dover category
Keyboard Music by Johann Sebastian Bach Bach-Gesellschaft edition. For harpsichord, piano, other keyboard instruments. English Suites, French Suites, 6 Partitas, Goldberg Variations, 2-Part Inventions, 3-Part Sinfonias.
Bach Masterpieces for Solo Piano: 37 Works by Johann Sebastian Bach Magnificent compilation includes Chromatic Fantasia and Fugue, Italian Concerto, Air Varied in the Italian Manner, Toccata and Fugue in D Minor, and Prelude and Fugue in C Minor; more.
The Well-Tempered Clavier: Books I and II, Complete by Johann Sebastian Bach All 48 preludes and fugues in all major and minor keys. Authoritative Bach-Gesellschaft edition. Explanation of ornaments in English, tempo indications, music corrections.