Astrophysicist Samuel P. Langley is elected the third Secretary of the Smithsonian Institution at a special meeting of the Board of Regents. His term lasts 19 years, until his death in 1906. Prior to his appointment, Langley was the Assistant Secretary in charge of exchanges, publications, and the library.  More - https://siarchives.si.edu/collections/siris_sic_560.