By Janet Vogt. Piano. Level: Early Intermediate. Educational piano collection. Published by Heritage Music Press.

10 Seasonal Duets for Two. Composed by Various. Arranged by Eric Baumgartner. Willis. Christmas, Duet. Softcover. 48 pages. Published by Willis Music

(Mid to Later Intermediate Level 1 Piano, 4 Hands). By William L. Gillock. Arranged by William L. Gillock. Willis. Mid to Late Intermediate. Softcover. 72 pages