Correspondence regarding longitude observations at Killorglin, County Kerry, Ireland, 1898.

Correspondence regarding the longitude of Yola, 1904.

Correspondence with the Admiralty regarding the longitude of Killorglin, expenses and the issue of a chronometer, 1898.

Letter regarding the travelling and baggage arrangements for determining the longitude of Killorglin, 1898.

Correspondence with the Ordnance Survey and locals regarding the determining of the longitude of Killorglin, 1898, with an Ordnance Survey map of the area.

Correspondence with the Ordnance Survey regarding the completion of the reductions of the observations from the Killorglin station, 1903-1905.

Printed paper containing the results of the telegraphic determination of the longitude of Killorglin, 1906.

Memoranda concerning the longitude of Killorglin determination, 1898.

Letter concerning the loan of a hut by H.H. Turner for the longitude of Killorglin station, 1898.

Memoranda concerning the Yola-Lake Chad Boundary question, 1904.

Completed reduction sheets of the Kukawa occultations, 1903-1904.

Completed reduction sheets of duplicate computations of the occultations observed at Yola, 1903.

Correspondence with the Liverpool Observatory concerning the re-determining of its longitude, 1892-1894.