Friedrich Burgmuller's op. 100 is his most noteworthy achievement, not least because its pieces are much more than mere mechanical studies.
This is a delightful collection of 18 short preludes composed by J.S. Bach and edited here for Piano by Hedwig McEwen and Kethleen Long.
A superb collection of simple and tuneful pieces in various jazz styles.
Easier Piano Pieces Vol.2. Edited by Howard Ferguson.
These Seven Sonatinas (Op. 168) were written in 1839, and have remained popular examples of the Sonatina form. They are all in three movements, following a similar Moderato - Andante - Rondo structure.
Easier Piano Pieces Vol.23. Grechaninov's Op.98 was published in 1923.