Attribution 4.0 International (CC BY 4.0)
You can use this work for any purpose, including commercial uses, without restriction under copyright law. You should also provide attribution to the original work, source and licence. Read more about this licence.
Credit
View of the bridge at Frankfurt. Kleine Presse edition on the occasion of Ehrlich's 60th birthday. Wellcome Collection. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.