CD-RW containing 134 aerial photographs of the area surrounding an unidentified quarry, including close-ups of geographic and archaeological features.

CD-RW containing Word documents (.doc) describing 33 coastal promontory forts and potential promontory fort sites in counties Antrim and Cork. Descriptions of each fort include colour photographs and physical location descriptions. A Donegal folder is present but empty.

CD-RW (written 20 April 2004) containing:
-Material pertaining to an archaeological assessment conducted by Markus Casey of 27 Quay St. and 2,3 & 4, Quay Lane, Galway, including photographs of the interiors and exteriors of the buildings before and during the assessment, correspondence regarding the assessment, and Casey's completed report (5 June 2003 – 28 November 2003, 87 files);
-Reports authored by Casey for a properties in Ballinphuill, Corofin, County Galway and Murrooghtoohy South, Fanore, County Clare where the owners proposed to build houses (3 March 2004 – 10 March 2004, 2 files);
-3 photographs of an archaeological site in Knockbrack, County Laois (7 April 2004);
-An unsorted folder with 3 one-page excerpts from other reports and a personal family photograph (15 May 2003 – 24 December 2003).

CD-RW (written 23 April 2004) containing 131 aerial photographs of the areas containing and surrounding Roadstone Provinces Ltd.'s proposed quarry at Cam, Brideswell, County Roscommon.

CD-RW containing 179 aerial photographs and 4 Word documents (.doc format) depicting Kilsaran Concrete's quarries at Mitchelstown, Ballynamona, Mulhussey, and Troman, County Meath, and their immediate environs.

CD-RW containing 102 aerial photographs documenting coastal promontory forts and potential promontory fort sites on the Dingle Peninsula.

CD-RW containing 279 aerial photographs of coastal promontory forts and potential promontory fort sites on the coast of County Cork.

CD-RW containing 111 aerial photographs of coastal promontory forts and potential promontory fort sites on the coast of County Cork.

CD-RW (copied October 2004) containing:
-Materials pertaining to a site inspection performed by Markus Casey at a site adjacent to Kilsaran Concrete's quarry at Bunaterin, just west of the village of Mucklagh near Tullamore. Casey found no clear evidence of archaeological sites that would be disturbed by the expansion of the quarry. Includes Casey's site report (January 2002, 7pp; for physical copy see P164/1/1/12), plus correspondence, an invoice, and 30 aerial photographs of the site (9 August 2001 – 29 July 2003);
-Report (.doc format) written by Markus Casey for Tom O'Keeffe. Casey was commissioned to inspect a site in Lydacan, Claregalway O'Keeffe wished to build upon. The site formerly incorporated a late medieval tower house (Lydacan House) that was largely demolished in 1992 by a previous landowner, and had been annotated as early as 1778 as the site of a ruined castle, which the current landowner was unaware of and created a delay in the development of the site. Casey recommends a programme of mitigatory measures to mitigate any possible interference with medieval remains that the proposed development might incur (September 2001, 15pp; see P164/3/8/1 for related materials);
-Archaeological assessment (.doc format) written by Markus Casey of No. 20, Long Walk, Galway, which deemed the site to be archaeologically resolved (20 March 2002, 3pp).

CD-RW containing documents pertaining to Shoreline Aviation Ltd., the light aircraft maintenance company managed by Markus Casey at Ireland West Airport south of Charlestown, County Mayo. Includes business records, maintenance manuals and schedules, correspondence, regulations, and business plans.