Arthur Schopenhauer March 1859. By Johann Schäfer.

Marie Curie. c. 1900. By Bain News Service.

Portrait of Chandrasekhara V. Raman. Needs clearance from Raman Research Institute, Bangalore.

Johannes Brahms portrait. By Fritz Luckhardt. Location: Vienna. Medium: Photographic positive.

Frederick Douglass January 26, 1874. By John Howe Kent. Albumen silver print. Additional permission required from George Eastman Museum. ID: 1992.1048.0001

Frederic Auguste Bartholdi. Year: 1876. By Benjamin Joseph Falk, New York.

Portrait of Theodore Roosevelt. Year: 1918. By Baker Art Gallery, Columbus O.

Portrait of Maxim Gorky sitting in an armchair wearing a dark shirt. Circa 1900.

Portrait of Robert Herman Koch. By H. Fechner.

Austrian physicist, philosopher and scientific theorist Erwin Schrödinger on 18th November, 1933.

Henry Ford, head-and-shoulders portrait, facing slightly left. 1919. By Hartsook

Photograph of F. Scott Fitzgerald published in The World's Work (June 1921 issue).

Andrew Carnegie. Between 1860-85.

Prof. Arthur S. Eddington. Circa 1900. Publisher Bain News Service.

Edvard Grieg. 25th July 1907 | Troldhaugen, (Bergen)

Helen Gurley Brown, full-length portrait, sitting on a desk in 1964. By John Bottega.

Edgar Allan Poe. Carte-de-visite after a daguerreotype, 1847, probably printed in the 1870s

Virginia Woolf (January 25, 1882 – March 28, 1941), a British author and feminist, with her chignon. Circa 1902. By George Charles Beresford.

Hans Christian Andersen. c. 1870. By Georg Emil Hansen.

Portrait of 56-year-old John D. Rockefeller. 1895.

Andrew Johnson circa 1870-1880. By Mathew Brady.

Studio photograph of Mohandas K. Gandhi, London, 1931.

Johannes Brahms. Circa 1937. By Harris & Ewing.

Walt whitman. ca. 1860-65. Grey eyes. No description about his eye colour found on the web. Contemporary paintings have shown blue, grey versions. By Mathew Brady.

Grover Cleveland. Year: c. 1885. Unknown photographer. Albumen silver print

Chester Arthur, head-and-shoulders portrait, facing left. Circa 1882. By Charles Milton Bell.

Grover Cleveland, bust portrait, seated, facing right. Date: 1880-1900.

General William Tecumseh Sherman, who sits stern-faced wearing a black mourning armband in a formal portraits after President Lincoln’s assassination. 1865. By Mathew Brady.

Sir Arthur Conan Doyle (1859-1930). Bain News Service, 1913 Jan. 27. Publisher Bain News Service.

Sarojini Naidu at Shimla Conference in July, 1945

Eugène Marcel Prévost (1 May 1862 – 8 April 1941) was a French author and dramatist. By Bain News Service, publisher. No date.

Portrait of Samuel Clemens, "Mark Twain" seated in chair reading a book. Ca. 1907. Photographer: Underwood & Underwood. Note: The photo frame on the wall depicts a poster of the movie "There Will Be Blood". Wallpaper has been improvised too.

Bertha Benz around circa 1871-1872. Probably 23-year-old Bertha Benz. Photographed by Mannheim Bühler.

Mahatma Gandhi with Jawaharlal Nehru, three-quarter length portraits, seated, at a meeting of the All India Congress, Bombay, India. 6 July 1946. Photographer: Max Desfor, who gave it to Dave Davis, Acme correspondent.

Nellie Bly (Elizabeth Cochrane). Photo by H.L. Meyers. c1890 Feb 21. Please note that the face has been digitally improved. Not altered.

Cabinet photograph of Gustav Mahler. Year 1893. By Leonhard Berlin-Bieber.

Frederic Auguste Bartholdi. Year: 1880 - ca. 1900

Marcel Proust (15 years old) photographed on March 24, 1887 by Paul Nadar.

The novelist George Sand is photographed by Nadar who takes a series of pictures of the writer, in March 1864.

William Howard Taft. Circa 1910s. By Harris & Ewing.

African American soldiers of the 4th US Colored Infantry Regiment are seen in this picture from 1865. The regiment’s soldiers were awarded three Medals of Honor for gallantry at Chaffin’s Farm, Virginia, in September 1864. By William Morris Smith.

Bjørnstjerne Bjørnson, 1909. By Erwin Raupp.

British statesman Sir Winston Churchill calls on President Hoover. Winston Churchill 18th Oct 1929. By Harris & Ewing.

A German soldier standing next to the statue of the Soviet leader Joseph Stalin. Novogorod, 1941.

Colourisation by me

Grover Cleveland. By Pach Brothers Studio. Between 1904.

Herbert Hoover. Between 1905-45. 1930s guessing by appearance. By Harris & Ewing.

Johannes Brahms, as a 20 year old. Taken in 1853 in Leipzig. By Bertha Wehnert-Beckmann. Medium: Salted paper print.

Portrait of Johannes Brahms. Matt print. Around 1889. By Carl Brasch.

Howard Carter meets President Coolidge. 8th May 1924. President Coolidge had requested a private lecture. By National Photo Company Collection.