These sketches, undated, were formerly attributed in our Archives to Andrew Elvins. They are in fact lithographs of observational skecthes by Warren De la Rue from 1856 April 20, as can be found in Camille Flammarion, La Planète Mars et ses conditions d'habitabilité, synthèse générale de toutes les observations..., vol. I (Paris: Gauthier-Villars et fils, 1892), p. 128, fig. 76, and p. 129, fig. 77, among other places.

Mars as seen in 1892(?). Sketch by Andrew Elvins.

Mars, as seen on 1892 August 22 in a 3-inch achromatic telescope. Sketch by Andrew Elvins.

Mars. Sketches by Andrew Elvins.

Paraselene of 1892 Mar 19. Drawn by John Goldie, Esq. of Galt, Ontario.

Mars as seen in 1892. Sketch by Andrew Elvins.

Mars as seen in 1892. Sketch by Andrew Elvins.

Mars on 1892 August 4 as seen in a 3-inch Achomatic telescope. Sketch by Andrew Elvins.

Mars as seen on 1892 August 2 in Mr. Lumsden's 10-inch reflector. Sketch by Andrew Elvins.

The Comet as it appeared in the Telescope, Tuesday July 18th '93 10 p.m. Sketch by J.R. Connon.