https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14006671
A section through the roadway of Holborn Viaduct, London: looking east, showing the middle level sewer. Wood engraving after W. Haywood, 1854.
A section through the roadway of Holborn Viaduct, London: looking east, showing the middle level sewer. Wood engraving after W. Haywood, 1854.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use