Licence: Public Domain Mark
Credit: Architecture: a lock and key. Wood engraving by [E. H.]. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0024300/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Architecture: a lock and key. Wood engraving by [E. H.]. Wellcome Collection. Source: Wellcome Collection.