Collection includes:
- Minute books, 1898-1971;
- Ledgers, 1948-1980;
- Cash books, 1952-1971;
- Journals, 1929-1970;
- Company records, 1902-1981;
- Pension schemes, 1966-1968;
- Written histories, 2007.
- The Scottish Western Co Ltd;
- The Caledonian Trust Co Ltd;
- The Second Great Northern Investment Trust Ltd;
- The Clydesdale Investment Co Ltd;
- The West George Street Property Co Ltd;
- The Astral Property Co;
- Scottish & Universal Investments Ltd;
- Rankinston Coal Co Ltd;
- Strathendrick Investment;
- Spider Investment Co Ltd;
- The Springfield Chair Co Ltd;
- Donne Securities;
- The Highland Tourist Development Co Ltd;
- The Second Scottish Western Investment Co Ltd;
- The Second Clydesdale Investment Co Ltd;
- The Ceylon Estates Investment Association Ltd;
- J & C Harrison Ltd;
- Gowland Steamship Co Ltd;
- MCP Co Ltd;
- F J Stephen Investment Ltd;
- M & M Holdings Ltd;
- Atchley Investment Co Ltd;
- Murray Minor Ltd;
- Alva Estates Ltd;
- Alchornes Trust Ltd;
- Demerara Co Pension Scheme Ltd.