See also The Times sister publication, The Sunday Times

The Sunday Times is the sister publication of The Times, a separate London-based daily newspaper founded in 1785.

Results are divided into six possible sections, based on the indexes searched: books, periodicals, official (government) publications, archives, newspapers, and reference works.
Books: 
Nineteenth-Century Short Title Catalogue; The Nineteenth Century publishing program, 
Periodicals:
ProQuest’s American Periodicals; ProQuest’s British Periodicals; Cotgreave's Index; An Index to Legal Periodical Literature; Cumulative Index to Niles' Register, 1811–1849; Periodicals Index Online; Poole's Index to Periodical Literature; Stead's Index to Periodical Literature; The Wellesley Index to Victorian Periodicals, 1824-1900
Official Publications:
House of Commons Parliamentary Papers; Proceedings of the Old Bailey; The U.S. Serial Set 
Archives:
Archive Finder 
Newspapers:
Palmer's Index to The Times
Reference: 
The "Bookman" Directory of Booksellers, Publishers and Authors; Dictionary of Nineteenth Century Journalism

Local and regional newspapers were chosen from both established country or university towns and the new industrial powerhouses of the manufacturing Midlands, as well as Scotland, Ireland and Wales. Special attention was paid to include newspapers that helped lead particular political or social movements such as Reform, Chartism, and Home Rule. The penny papers aimed at the working and clerical classes are also present in the collection.

 The original versions of most publications are held by the British Library, the National Library of Scotland, the National Library of South Africa, and the National Library of Australia.