Tracing, Tracing paper
Made by immersing good quality paper in sulfuric acid for a few seconds. The acid converts some of the cellulose into amyloid form having a gelatinous and impermeable character and translucent quality. When the treated paper is thoroughly washed and dried, the resulting product is much stronger than the original paper. Tracing paper takes it's name from it's ability for an artist to trace an image onto it. When tracing paper is placed onto a picture, the picture is easily viewable through the tracing paper.
George Pitt
probably after Sir Henry Cheere, 1st Bt
circa 1900 (circa 1738-1741)
NPG D20961
Louise of Savoy, formerly known as Katherine of Aragon
after Jacobus Houbraken, after Hans Holbein the Younger
1743
NPG D24180
King William IV
after a drawing by Sir Francis Leggatt Chantrey
1837, based on a work of 1830
NPG 316a(141)
Detail of jewels from portrait of Lady Mary Fitzalan, Duchess of Norfolk, formerly identified as Mary, Queen of Scots
by Sir George Scharf, after Hans Eworth
circa 1857-1895 (1565)
NPG D22545
James Wolfe
by Harold Lee-Dillon, 17th Viscount Dillon, after a drawing attributed to Sir Harvey Smyth, Bt
circa 1860-1884
NPG 713a
Sir George Scharf
by Sir George Scharf
(1872)
NPG D20912
Mary, Queen of Scots
by Sir George Scharf, after Unknown artist
1880s?
NPG D20918
Unknown couple, called Robert Carr, Earl of Somerset; Frances, Countess of Somerset
by James Donald Milner, probably after Paul van Somer
1 December 1911
NPG D21673
Thomas Cartwright
by Sir Henry Hake, after Isaac Beckett, after Gilbert Soest
circa 1927-1951
NPG D21670
Humfry Gilbert Garth Payne
by Ithell Colquhoun
1934
NPG 5269
Somerset Maugham
by Graham Sutherland
1953
NPG 5328
Sir Richard Rogers
by Sir Eduardo Paolozzi
1988
NPG 6022(9)