The William P. Didusch Center for Urologic History in Linthicum, Maryland, is a medical-history museum, archive, and research center devoted to roughly 300 years of urology’s development. Founded from the work of scientific illustrator William P. Didusch, it began in Baltimore in 1971 and moved with the American Urological Association to Linthicum in 2003, expanding its research role. Its collections include Didusch’s anatomical drawings, photographs, early cystoscopes and other instruments, stone-crushing devices, kidney stone specimens, Hugh Hampton Young’s “Prostate Punch,” and an early-20th-century “spermatorrhea ring.” Together with its library, archives, and historic microscopes, the center preserves the specialty’s evolution from crude, hazardous practices to more refined care.