- CollectionD - University Archive Miscellaneous Donations (D-Numbers)
- SeriesD467 - Deposit relating to Gertrude Mayer, St Mary's student 1906 - 1908
- SubseriesD467/3 - Gertrude Mayer
- ItemD467/3/1 - London County Council Technical Education Board junior certificate for Gertrude Louisa Mayer from Bloomfield Road Board School
- ItemD467/3/2 - University of Cambridge junior students dictation and arithmetic certificate for Gertrude L Mayer
- ItemD467/3/3 - London County Council Technical Board notice declaring there will be no public presentations of certificates due to the death of Queen Victoria
- ItemD467/3/4 - School Board for London pupil teacher's report book for Gertrude L Mayer
- ItemD467/3/5 - University of London seasonal lecture course attendance certificate for Gertrude Mayer from the Woolwich Centre
- ItemD467/3/7 - St Mary's Hall First Class teacher training certificate for Gertrude L Mayer
- ItemD467/3/8 - Board of Education teacher training certificate for Gertrude Louisa Mayer, St Mary's student 1906 - 1908
- ItemD467/3/9 - Letter from "Harry" to "Gertie" written from Mesopotamia