Naturalization record of Nikola Tesla - U.S. Citizenship July 30th, 1891 Nikola Tesla's natualization record. Tesla is quoted as saying this document was more valuable to...
Giddings Brothers 1899 A receipt from a dry goods store in Colorado Springs where Nikola Tesla purchased felt.
Continental Oil Company July 14th, 1899 A receipt from the Continental Oil Company for paraffin oil. Nikola Tesla used this to seal his salt...