Correspondence

This section tracks confirmed correspondence holdings and provides access links where available. When digitized scans are not public, we list the repository and access conditions.

Digitized Items (Public)

• Caltech Archives — Hale Papers: Tesla correspondence item (1908, two pages; IIIF scans).

Finding Aids (No Public Scans)

• Library of Congress: “Nikola Tesla correspondence, 1890–1934” (MSS 014047).
• Columbia University Libraries: “Nikola Tesla papers, 1894–1931” (correspondence with Robert Underwood Johnson and others).

In‑Person Holdings

• NYPL Archives: Nikola Tesla letters.
• American Philosophical Society: Nikola Tesla collection (copy).

Sources

• Caltech Archives Tesla correspondence item
• Library of Congress finding aid (MSS 014047)
• Columbia finding aid: Nikola Tesla papers
• NYPL Nikola Tesla letters
• APS Nikola Tesla collection (copy)