Authors: Charles (sorted by quantity of books)
- Bridges, T. C. (Thomas Charles) 1868-1944 2 books
- Johnston, Charles 1867-1931 2 books
- Dole, Charles F. (Charles Fletcher) 1845-1927 2 books
- Hardwick, Charles 1817-1889 2 books
- Andrews, Charles McLean 1863-1943 2 books
- Lucas, Charles Prestwood, Sir 1853-1931 2 books
- Brent, Charles Henry 1862-1929 2 books
- Goodwin, C. C. (Charles Carroll) 1832-1917 2 books
- Beale, Charles Willing 1845-1932 2 books
- Baldwin, Charles Sears 1867-1935 2 books
- Richardson, C. J. (Charles James) 1806-1871 2 books
- Smith, C. Alphonso (Charles Alphonso) 1864-1924 2 books
- Fraser, Malcolm 1868-1949 2 books
- Olcott, Charles S. (Charles Sumner) 1864-1935 2 books
- Wright, C. T. Hagberg (Charles Theodore Hagberg) 1862-1940 2 books
- Waterton, Charles 1782-1865 2 books
- Marlatt, C. L. 1863-1954 2 books
- Tubergen, C. B. (Charles Burton) 1890- 2 books
- Chiniquy, Charles Paschal Telesphore 1809-1899 2 books
- Macauley, C. R. (Charles Raymond) 1871-1934 2 books
- Markham, Edwin 1852-1940 2 books
- MacFarlane, Charles 1799-1858 2 books
- Bickerdyke, John 1858-1933 2 books
- Black, C. B. (Charles Bertram) 1822-1906 2 books
- Moore, Henry Charles 1862-1933 2 books