Signatures/correspondence signed by the following:
Cadbury, Edward (1873-1948), confectionery manufacturer and industrial and social reformer. Seen in book;
Caine, Sir (Thomas Henry) Hall (1853-1931), novelist. Seen in book;
Caird, John, (1820-1898), minister and Principal of University of Glasgow. Seen in book;
Caird (Alice) Mona, writer. Seen in book;
Campbell, Lewis (1830-1908), classical scholar. Seen in book;
Campbell, Reginald John (1867-1956), minister. Seen in book;
Carpenter, (Joseph) Estlin (1844-1927), Unitarian minister. Seen in book;
[?]Carpenter,William Boyd, (1841-1918), Bishop of Ripon. Seen in book;
Carpenter, Lant (1780-1840), minister. Seen in book;
Carrington, Charles, actor. Seen in book;
Carter, (Helen) Violet Bonham, Baroness Asquith of Yarnbury (1887-1969), politician. Seen in book;
Cecil, (Edgar Algernon) Robert Gascoyne, Viscount Cecil of Chelwood (1864-1958), politician and peace campaigner. Seen in book;
Churchill, Sir Winston Leonard Spencer (1874-1965), prime minister. Seen in book;
Clayden, Peter William (1827-1902), journalist and author. Seen in book;
Clifford, John (1836-1923), minister of the New Connexion of General Baptists. Seen in book;
Clynes, John Robert (1869-1949), trade unionist and politician. Seen in book[?];
Cobden Unwin, Jane Catherine (1851-1947), suffragist and radical. Seen in book;
Cobden, Richard (1804-1865), manufacturer and politician. Seen in book;
Coit, Stanton George (1857-1944), ethical reformer. Not seen in book;
Collins, John Churton (1848-1908), writer and literary figure. Seen in book;
Creighton, Louise Hume (1850-1936), author and activist. Seen in book;
Crooks, William [Will] (1852-1921), politician. Seen in book;
[?]Cumming, Sir William Gordon Gordon-, fourth baronet, (1848-1930), disgraced socialite. Seen in book;
Cumming, Constance Frederica Gordon- (1837-1924), travel writer. Seen in book;
Dłuska, Bronisława, (1865-1939), physician. Sister of Marie Curie. Seen in book;
Herbert, Henry Howard Molyneux, fourth earl of Carnarvon (1831-1890), politician. Seen in book;
Howard, Rosalind Frances, Countess of Carlisle (1845-1921). Seen in book;
[?]Lindsay, James Ludovic, twenty-sixth earl of Crawford and ninth earl of Balcarres (1847-1913), astronomer. Not seen in book.

Three further signatures seen in folder, however they remain unidentified.
Also seen in folder without signature:
1 picture of Francis Power Cobbe, name mentioned in book;
1 music arrangement by Ed. [Edward[?] Carpenter, name not mentioned in book.