"Undershirt found on corpse of Lindbergh baby in comparison with clean undershirt." NJ.gov
Bruno Richard Hauptmann mugshot. charleslindbergh.com
In September 1934, German born carpenter Bruno Richard Hauptmann patronized a New York service station, and paid with a $10 gold note. Gold notes had been discontinued in 1933 so the clerk recorded Hauptmann's license number. The bill matched one of the serial numbers of Lindbergh's ransom money, a major break in the case. Hauptmann was arrested on September 19, 1934 and officers found an additional $13,760 of the ransom money in his garage.
As the police and FBI looked further into Hauptmann, the evidence against him accumulated.
September 28, 1934. The New York Times
"Bruno Hauptmann's home and [garage] where ransom money found (Lindbergh baby)" January 1934. Digital Commonwealth Massachusetts Collections Online
"The Police Digging at the Foundation of the Hauptmann Garage for Further Clues After the Top of the Structure Had Collapsed Yesterday" September 28, 1934, The New York Times
"Searchers digging up the floor of the garage of Bruno Richard Hauptmann, in their hunt for ransom money, Flemington, New Jersey. An insert showing the piece of timber in which some of the money and a gun were hidden." 1934. Library of Congress