The James Niblock papers contain compositions written by him from the 1950s until 2012. The "Collection Panorama" contains his "Dialogue and Dulciana" for flute and piano and was published by Gerard Billaudot. Other works are entered under individual titles. Niblock's music covers a broad range of instruments, including strings, piano, organ, horns, winds, choral, and percussion. Many of these pieces are oversized or have oversized copies, and they can be found in boxes 4143-4146.

The collection also holds Niblock's own collections of programs and newspaper articles from music events. The programs span the entire time of his teaching career up until the present. They include his own performances from Lansing, East Lansing, his trips to Argentina and Brazil, and programs from the Blue Lake Fine Arts Camp.

Also included in the collection are two DVDs and one CD. One DVD is "Ruth", the opera Niblock wrote for the 35th anniverary of the Blue Lake Fine Arts Camp; the other is "The Verdehr Trio, Composers Series." The CD is titled "The Making of a Medium." Both include Niblock as a featured composer.