Architecture: the roof trusses of three chapels compared. Engraving by A. Dick, 1847, after M. A. Nicholson. https://www.rawpixel.com/image/14005891/image-paper-pattern-public-domainFree Image from public domain licenseArchitecture: trusses in Camden Chapel. Engraving by A. Dick, 1847, after M. A. Nicholson. https://www.rawpixel.com/image/14017935/image-paper-pattern-public-domainFree Image from public domain license