Edison in 1902 started to Gold Mould cylinders, this process uses a oversized groove and a large wax master. The master is placed in a vacuum with 2 pieces of gold leaf. High voltage is introduced to the gold leaf in the bell jar, and vaporizes...
Edison in 1902 started to Gold Mould cylinders, this process uses a oversized groove and a large wax master. The master is placed in a vacuum with 2 pieces of gold leaf. High voltage is introduced to the gold leaf in the bell jar, and vaporizes...
Edison in 1902 started to Gold Mould cylinders, this process uses a oversized groove and a large wax master. The master is placed in a vacuum with 2 pieces of gold leaf. High voltage is introduced to the gold leaf in the bell jar, and vaporizes...
Grant, Ulysses S. (Ulysses Simpson), 1822-1885; Civil War; Politicians; Presidents; Politics and government; Generals
Volume 17 of a continuing series (currently 31 volumes) showcasing an edited collection of documents by and about Ulysses S. Grant. Materials in the series span the dates of 1837-1885; volume 17 spans the dates of January 1-September 30, 1867.
Grant, Ulysses S. (Ulysses Simpson), 1822-1885; Civil War; Politicians; Presidents; Politics and government; Generals
Volume 6 of a continuing series (currently 31 volumes) showcasing an edited collection of documents by and about Ulysses S. Grant. Materials in the series span the dates of 1837-1885; volume 6 spans the dates of September 1-December 8, 1862.
Grant, Ulysses S. (Ulysses Simpson), 1822-1885; Civil War; Politicians; Presidents; Politics and government; Generals
Volume 28 of a continuing series (currently 31 volumes) showcasing an edited collection of documents by and about Ulysses S. Grant. Materials in the series span the dates of 1837-1885; volume 28 spans the dates of November 1, 1876-September 30,...