Autograph letter signed, handwritten in black ink on unlined paper with the printed letterhead of the Institut Henri Poincaré, Paris, France.
Louis Victor Pierre Raymond de Broglie, duc de Broglie was a French physicist who made groundbreaking contributions to quantum theory.
SCDIRB copy (barcode 39088019929587) is the gift of H.W. Lende, Jr. and has Lende accession number D-5.
SCDIRB copy has source: Remember When Auctions, Wells, Maine, September 1997.
SCDIRB copy is housed in an archival box together with other manuscripts from the H.W. Lende, Jr. Manuscript Collection, filed in Dibner accession number order.
Summary:
Letter to "Monsieur" thanking him for his positive response to Broglie's article to be published in Portugaliae Mathematica and explaining his theory involving James C. Maxwell's equations, with an inscription of a formula.