A folder with materials related to Fr. William F. Rigge, S.J.'s Harmonic Curves : the book. The folder collects advertisements, its making, publication, and reviews.

A folder of materials related to harmonic curves and the various types and specimens. The folder collects various subfolders with handwritten drawings and notes about the harmonic curves.

A folder of various articles and newspapers related to Harmonic Curves: the Machine Articles (reprints): "A Compound Harmonic Motion Machine."

A folder with various annotated plates and pictures for the book "Harmonic Curves" by William F. Rigge, S.J. There are also some other papers related to the book in the folder.

A folder with materials related to Harmonic Curves: the Machine by Fr. William F. Rigge, S.J. The contents include the history of its making and operation and studies of its curves, part 2.

A folder of materials related to articles in periodicals on eclipses written by Fr. William F. Rigge, S.J. The article in the folder is "The Eclipse Expedition of the Creighton University to Washington, Ga." with photographs.

A folder with various articles on the Moon written by Fr. William F. Rigge, S.J.

A folder with articles related to observatories.

A folder of materials related to articles about eclipes in different periodicals. The materials in the folder include eclipse charts for the years 1911 to 1925.

A folder with materials related to earlier studies from Fr. William F. Rigge, S.J.'s work on shadows and time.

A folder of materials related to articles about eclipes in different periodicals. The materials in the folder include eclipse charts for the years 1905 to 1909.

A folder with materials related to Fr. William F. Rigge, S.J.'s work on occultations from 1910 - 1927.

A folder with materials related to Fr. William F. Rigge, S.J.'s work on planets including calculations of conjunctions, oppositions, and transits.