Photo credits:

Many thanks to the New York Public Library's collection for the use of these selections:

https://digitalcollections.nypl.org/items/5a40abc0-66a0-0132-d674-58d385a7b928

https://digitalcollections.nypl.org/items/25c2ace0-71ba-0132-30f9-58d385a7bbd0

Author's photograph of biliary stones as displayed at the Berlin Museum of Medical History at Charité