Correspondence with the Director of Works concerning the building of the New Altazimuth Dome, 1892.

Correspondence with the Admiralty concerning the contract for the building of the New Altazimuth Dome, 1894-1895.

Correspondence with Sir Howard Grubb concerning the contract for the New Altazimuth Dome, 1895.

Bills and accounts from Grubb for the building of the New Altazimuth Dome, 1895-1896.

Correspondence with Grubb on the progress of the building of the New Altazimuth Dome, including rough sketches, 1894-1896.

Correspondence with Cooke and Sons concerning an estimate for the building of the New Altazimuth Dome, which was declined, 1894.

Various undated, loose papers:

1. Three metal models of revolving gears for the New Altazimuth Dome.

2. Diagram of the base of the transit circle.

3. Blueprint: 'Greenwich Altazimuth Dome, Elevation vertical Lunette Girder'.

4. Sketch of the latches for the New Altazimuth Dome.

5. Detailed diagram in black and red showing the exterior of the New Altazimuth Dome, north and south elevations and east and west elevations.

6. Blueprint of the New Altazimuth Dome.