This section comprises what was probably part of the Outlook Tower library, although some books may have been in Patrick Geddes' private collection. Subjects covered are:

Agriculture, Husbandry, Gardens (1-21)
Architecture (22-42A)
Art (43-55)
Astronomy and Cosmography (56-75)
Biology, Botany and Zoology (76-108)
Education (109-113)
Exhibitions (114)
Geography (115-128)
Geology and Mineralogy (129-135)
History and Chronology (136-187)
Literature (188-196)
Music (197)
Planning, Housing, Public Health etc. (198-230)
Printing (231)
Religion and Philosophy (232-241)
Science (Applied and Theoretical) Including Mathematics, Mechanics, Navigation etc. (242-291)
Social Sciences including Sociology, Political Economy, Politics, Social Studies (312-317)
Travel and Topography (318-341)
Government Papers (342-349)
General Reference Works (350-354)
Miscellanea (355-361)

This section comprises the following series:

1. Town planning

2. Economics

3. Sociology and Civics

4. Art

5. Architecture

6. Philosophy

7. Religion

8. Education

9. Geography

10. Science

11. Astronomy

12. World Current Affairs and Politics

13. Literature/Journalism

14. Maps and Guide Books

15. Miscellanea

The collection covers most periods of Geddes’s life, and nearly all of the places in which he lived and worked. It comprises correspondence, notes, pamphlets and books, photographs, maps, plans, prints and drawings, including Geddes' famous 'thinking machines'.

This section comprises the following series:

1. Civilisation, Social Science

2. Material relating to Frédéric Le Play

3. Sociology and Health

4. Civics, Occupations

5. Social Evolution

6. Applied Urban and Rural Sociology

7. Miscellaneous Sociological Notes

8. Miscellaneous Sociological Notes (continued)

9. Miscellaneous Sociological Notes

10. Miscellaneous Notes on Sociology and Reconstruction

11. Miscellaneous Notes on (International) Sociology

12. Notes and Papers on Sociology, Life Theory and Women