Grid map showing railroad routes from Humboldt Bay to the Sacramento Valley, to accompany a report by M M O'Shaughnessy. (Referred to only, but does not seem to be included in this archive). Drawn at a scale of 3 miles to 1 inch.

Colour map showing the final location of the Iron Mountain Railway, Shasta County, California. The map includes a declaration by M M O'Shaughnessy, Chief Engineer of this railway, certifying its final location and profile. Drawn at a scale of 400 feet to 1 inch.

Blueprint map showing the final location of the Iron Mountain Railway, Shasta County, California. The map includes a declaration by M M O'Shaughnessy, Chief Engineer of this railway, certifying its final location and profile. Drawn at a scale of 400 feet to 1 inch.

Blueprint map showing the location of the Iron Mountain Railway, Shasta County, California. M M O'Shaughnessy was the Chief Engineer of this railway, and the map shows a signed, sworn affidavit by both him, and by Louis B. Parrot, President of the Iron Mountain Railway. The map was surveyed by M M O'Shaughnessy, CE. Drawn at a scale of 1,000 feet to 1 inch. The scale of the profile in the map is 100 feet to 1 inch (vertical), and 2,000 feet to 1 inch (horizontal).

File of fragments and tracings of OS maps of An Caiseal to Gabhla. Each item contains several of Robinson's annotations. Not all of the map sections are indexed using Robinson's numbering systems, but the ones that are have been grouped together at the start: no's 51 (3 copies), 51 A/6, 51C, 51G (2 copies), 51H, 51I, 51J.

File of fragments and tracings of OS maps of Béal an Daingin / Bealadangan. Each item contains several of Robinson's annotations. Large map on tracing paper with Cladhnach at the North, Barr an Doire to the East, An Caorán Beag to the South, and An Cheathrú Rua Theas and Thuaidh to the West. Robinson's indexing systems gives the sheets the following numbers 78F, 78I, 90B, 90C, 90E, 90H.

File of fragments and tracings of OS maps of Carna and Cill Chiaráin. Each item contains several of Robinson's annotations. Robinson's indexing systems gives the sheets the following numbers: 64H, 64I, 76(2 copies), 76B (2 copies), 76 B/C, 76C, 76C/E, 76D (3 copies), 77 (2 copies), 77C, 77D, 77F, 77G, 89A. Further sections that are unmarked, covering the areas of Áird Mór.

A note from Gerard Jennings enclosing edits on a copied map of the area, dated 19 July 1989.

File of fragments and tracings of OS maps of Clifden, Ballinaboy and Cleggan. Each item contains several of Robinson's annotations. Filed in with these fragments is a photocopied grid map of Connemara National Park with a handwritten note to Tim Robinson from Noel K[ ] on the forestry in the area.

File of fragments and tracings of OS maps of Doire Rois, Lough Aconeera. Each item contains several of Robinson's annotations. Robinson's indexing systems gives the sheets the following numbers: 52, 63, 65A, 65B, 65E, and 77H.

File of photocopied sections of magnified OS maps, entitled 'Errisbeg Working Copy'. These are not annotated, but the magnification shows gradients.