These photographic slides contain photos of workshops held in Kodaikanal and some instrument photos. Here also, we can find pictures of Peter's workshop on the 30-inch hydraulic slew clinch, Millino machine, Arbudaraj Bandsaw machine, Old Lathe machine, and one photo of Kodaikanal Library and 6-inch North dome.

The letter is from John Evershed, Ag. Director Kodaikanal & Madras Observatories to The General Superintendent, Public Works Workshops, returning the blueprint of gearing for moving the spectroheliograph roof with measurements. He also encloses a sketch drawn to the scale of the wall, rail, and girder. And mention that the rack bar should be 18 feet long.