The following archives hold material relating to this person:
Arc ref classic
| Archive Name | Source | Source Cat No | Building Id | Item Name | Notes |
| RIBA Nomination Papers | RIBA Archive, Victoria & Albert Museum | 100005 | | | L no3640 (box 14); F no2910 (box 14) |
| Cowie and Seaton Collection | National Monuments Record of Scotland/NMRS, RCAHMS | 200081 | | | Many plans & drawings relating to the Leadbetter, Fairley & Reid practice, inherited by Cowie. |