HH Holmes went to University of Michigan Medical School alongside William James Mayo

>one of the seven founders of the Mayo Clinic

>served in World War I at the rank of Colonel (O6), as chief adviser for U.S. Army surgical services[2] in the office of the U.S. Army Surgeon General.

and John Jacob Abel

>Abel showed great interest in isolating pure form of internal gland hormones. The first work that led to his international reputation as a pharmacologist and biochemist was the isolation of epinephrine from adrenal medulla.

https://en.wikipedia.org/wiki/H._H._Holmes

https://en.wikipedia.org/wiki/William_James_Mayo

https://en.wikipedia.org/wiki/John_Jacob_Abel

Also Albert Benjamin Prescott was director of the chemical lab while they were there

>(MED: 1864), chemist; dean of the school of pharmacy in 1876; director of the chemical laboratory in 1884; president of the American Chemical Society in 1886; president of the American Association for the Advancement of Science in 1891; president of the American Pharmaceutical Association in 1900

>His ancestor John Prescott migrated from England to Boston in 1640.[3] William Hickling Prescott, the prominent historian, and Colonel William Prescott, the commander in the battle of Bunker Hill, were also of the same lineage as Albert Prescott.