British Library Catalogue.
Standard Name: Sidgwick, Frank
|Connections Sort descending||Author name||Excerpt|
|Family and Intimate relationships||Ethel Sidgwick||
Of the brothers, Frank became an author and more importantly a publisher (founder of the firm of Sidgwick and Jackson ), while Hugh became a civil servant.
Matthew, Henry Colin Gray, Brian Harrison, and Lawrence Goldman, editors. Oxford Dictionary of National Biography.
under Arthur Sidgwick