Lewis Powell (aka Lewis Payne), in sweater, seated and manacled, one of the conspirators in the Abraham Lincoln assassination. This photograph has background of dark metal, and was presumably taken on U.S.S. Saugus, where he was for a time confined. Washington Navy Yard, District of Columbia. 27 April 1865. By Alexander Gardner.

Daguerreotype of John Tyler, tenth president of the United States. circa 1845-50. By Edwards & Anthony.

Portrait of Sir Henry Joseph Wood. Bain News Service, publisher.

Very nice colourisation of this famous B&W photo by 'Word War II Aircraft' site.

Dr. Bernardo Houssay working at the laboratory. Year 1949. By J.W. McGuire.

Charles Sumner. c. 1860-65

Charles Sumner. c. 1870. Taken in Lowell, Massachusetts (probably)

Walt Whitman. ca. 1862. Grey eyes. No description about his eye colour found on the web. Contemporary paintings have shown blue, grey versions. By Mathew Brady.

Albert Einstein. Age 33. Year 1912. By Jan F. Langhans. Gelatine silver print.

P.T. Barnum. Created between 1855 and 1865. Photographed by Mathew Brady.

original photo, see colourisation

www.flickr.com/photos/karhil/474358294

Portrait of Swedish author August Strindberg. Year: 1912. Photographer: Sven Åsberg. Location: Stockholm.

Bjørnstjerne Bjørnson, 1903. By Karl Anderson.

Millard Fillmore. Circa 1855-1865. By Mathew B. Brady.

Ida M. Tarbell, head-and-shoulders portrait, facing front. c1904.

Franklin D. Roosevelt. about 1932. Photographer- Vincenzo Laviosa

Arthur Schopenhauer March 1859. By Johann Schäfer.

Chester Alan Arthur. Circa 1880. By Abraham Bogardus.

Portrait of George B. McClellan. Circa 1860-65. Most likely 1861. By Mathew Brady.

Ulysses S. Grant 22nd April 1865, Philadelphia, Pennsylvania. By Frederick Gutekunst. The black armband hanging from his sleeve may be a mourning band for President Abraham Lincoln who was assassinated on April 14, 1865. Probably taken while Lincoln's courtege traveled through Philadelphia.

President James Buchanan. Between circa 1860 and circa 1865. By Mathew Brady.

Fyodor Dostoyevsky, 9 June 1880. Photographed by Mikhail Mikhailovich Panov.

Portrait of Frederick Douglass. Circa 1879. By George Kendall Warren.

Portrait of Thomas Hardy, 1889. Woodburytype. By Herbert Rose Barraud.

Alfred Werner. Circa 1915. Unknown photographer.

Thomas Edison in lab with "Edison Effect" bulbs. Year: 1919. Location: West Orange, New Jersey.

Phineas T. Barnum, attributed to Mathew Brady Studio, c. 1860-1870, glass plate collodion negative.

President Lincoln & General George B. McClellan in the general's tent at Antietam, 3rd October 1862. Dissatisfied with General McClellan’s non-responsiveness after Antietam Abraham Lincoln went out to Maryland in October to meet with him. McClellan had a habit of making the commander in chief come to him, which Lincoln tolerated but also noted as a sign of the officer’s arrogance. Photographed by Alexander Gardner.

Portrait of general Robert E. Lee, officer of the Confederate Army. May 1869. By Levin Corbin Handy.

First attempt at selective colourisation

Portrait of Arthur Stanley Eddington. Prior to 1945. Photograph by Transocean (Photographic company, Berlin).

Portrait of Theodore Roosevelt. Year: 1907. By Harris & Ewing.

Charles Baudelaire, 1861, printed 1877. Woodburytype. Photograph by Étienne Carjat.

Great, great Uncle Charles 'Charlie' McIntyre, 6th Battalion, The Black Watch, 1915

Alexander H. Stephens, Representative from Georgia, Thirty-fifth Congress, half-length portrait. Year: 1859. Photograph by Julian Vannerson.

Abraham Lincoln. February 9, 1864. By Anthony Berger.

Alexander Graham Bell. Circa 1904. By Frank Boteler.

Andrew Carnegie in his golf cottage neaer St. Andrew's golf links, Westchester County, New York, seated in a wicker chair holding The Independent magazine. 1911. Gelatin silver print

Favorite tweet:

ColourAIze: AI-Driven Colourisation of Paper Drawings with Interactive Projection System @ACM_ISS 2018 @PaintsChainer @PreferredNetJP pic.twitter.com/JOCOajBGxH

— HCI Research (@HCI_Research) November 12, 2018

Jean Sibelius between 1940-45 at Ainola, Finland. By Santeri Levas.

A portrait of Dr. Paul Heyse. Year: 1870. By Friedrich Müller.

Portrait of Robert Herman Koch.

Portrait of Thomas Alva Edison. Year: 1870. By Anderson Studio.

Maxim Gorky, half-length portrait, facing front. Circa 1906. The image is possibly created by Herman Mishkin.

Photograph shows writer Sir Arthur Conan Doyle. Created: between ca. 1920 and ca. 1925. Bain News Service, publisher.

Portrait of a Nihang or an Akali. Portrait of a Sikh warrior, also known as Nihang or Akali, wearing an elaborate conical turban, adorned with chakrams or war-quoits.

original photo, see colourisation

www.flickr.com/photos/karhil/474358280/

President James Buchanan. Between circa 1860 and circa 1865. By Mathew Brady.

Cornelius Vanderbilt by Mathew Brady created between 1844 and 1860