Syphilis was first identified by
Treponema pallidum is the causative agent of syphilis, was first discovered by Schaudinn and Hoffmann in the chancers and inguinal lymph nodes of syphilitic patients. Ref: Textbook of microbiology; Ananthanarayan and paniker's; 10th edition; Pg: 378
Fraenkel
Nicolaescu
Schaudinn and Hoffman
Ogston
Bacteriology