Otto Forberg's steady output is shown by its HMB entries: 733 items for the period 1888-1898, and 116 in 1893-98. Howeverm this was small compared with the 3000 items of Robert Forberg for 1862-1900. The catalog included lighter items by Gustav Lange and Erik Meyer-Helmund, violin works by Hans Sitt and Gustav Hollaender, and many piano works by Adolf Ruthardt and Arnold Krug.
Otto Forberg's plate numbers were issued in a regular chronological fashion. Plate numbers are in the format of #### . Dates in italics are estimated.
|3012–3||Reger||2 Compositions for Violin and Piano, Op.87 (nos.1,2)||1905|