Topham, E. (1971): Letters from Edinburgh 1774–1775. Edinburgh: James Thin. s. 27. ISBN 978-1-236-68255-0. Arkivert fra originalen den 1. januar 2016. Sitat: «I make no manner of doubt but that the High Street in Edinburgh is inhabited by a greater number of persons than any street in Europe.»
Topham, E. (1971): Letters from Edinburgh 1774–1775. Edinburgh: James Thin. s. 27. ISBN 978-1-236-68255-0. Arkivert fra originalen den 1. januar 2016. Sitat: «I make no manner of doubt but that the High Street in Edinburgh is inhabited by a greater number of persons than any street in Europe.»
