The following system of arrangement was imposed on the material prior to cataloguing:
1-1256: Correspondence: all correspondence, most memoranda, and any short reports enclosed with a substantial covering letter.
1257-1437: Committee Papers: documents relating to meetings of committees or representatives on location. Includes agenda, pre-meeting briefings, and minutes.
1438-1982: Technical Data: all papers on any technical aspect of the project, except progress reports. Includes graphs, some memoranda, printed data sheets from firms, reports from individuals or groups and tenders. Also calculations, etc.
1983-2040: Progress Reports: all progress reports directly linked with project work from any firm. Does not include annual or monthly reports from establishments such as the Mount Stromlo Observatory.
2041-2118: Drawings: all drawings unless inseparable from a report, etc. Includes photocopies as well as originals, but not graphs, bar charts, tables, etc. Also, not rough sketches.
2119-2222: Administration: any non-technical documents relating to staffing, finance, etc. Includes reports on tenders, though not the tenders themselves and any records of administrative decisions, etc.
2223-2260: Publications: any published work, such as extracts from technical journals, unless more appropriate under ''Technical Data''. Includes newspaper cuttings, but not sales literature from firms.
2261-2278: Photographs: all photographs unless inseparable from reports, etc
The final series (2279-2307) is composed of later additions to the collection. The files within this part have not been rearranged.