Electronic databases - title list O: Available in the Library's Reading Rooms

The electronic databases available in the British Library's London Reading Rooms cover business and intellectual property, the humanities (including rare books and music), manuscripts, maps, science, social science and official publications, newspapers and our Asia, Pacific & Africa Collections.

Owing to licensing restrictions, these resources can only be accessed from British Library workstations within our Reading Rooms and Business & IP Centre.

Except where indicated, titles are available in all the Library's London Reading Rooms.

Online resource

CD-ROM resource

Title	Brief Description	Format
The Observer 1994, 1995, 1996, 1997 Available via NewsBank 1998 -	Full text of the national Sunday broadsheet newspaper, published in London. For help with this resource: see staff at the Humanities, Rare Books & Music or Social Sciences Reference Enquiry desks.
OCLC WorldCat	WorldCat is a union catalogue created and maintained collectively by more than 9,000 member institutions in more than 80 countries worlwide, and contains over 50 million online records for material in many different formats. Resources in WorldCat represent hundreds of languages and cultures. For help with this resource: see staff at the Humanities or Rare Books & Music Reference Enquiry desks.
OECD iLibrary	OECD’s Online Library for books, papers and statistics published from 1998 to date and the gateway to OECD’s analysis and data. For help with this resource: see staff at the Social Sciences Reference Enquiry desk.
OneKey + NHS Analyser	Provides detailed information on NHS organisations, including Strategic Health Authorities and PCTs, covering their priorities, their personnel and full text of the documents they produce. NB: Access is password protected; please ask staff at the enquiry desk to log you in if you wish to use this resource. For help with this resource: see staff at the Social Sciences Reference Enquiry desks.
Onesource	Over 100 industry profiles, plus company profiles for over 30 million private and public companies around the world. Also includes information for over 35 million company executives worldwide and news analysis from 2,500 sources. For help with this resource: see staff at the Business Information Reference Enquiry desk.
Opticks	Opticks by Isaac Newton printed in London, 1704. Warnock Library copy. NB: CD-ROM available from the Rare Books Reference Enquiry Desk for use on a standalone terminal only. For help with this resource: see staff at the Rare Books Reference Enquiry Desk.
ORBIS	Orbis is a global company database listing over 75 million companies around the world providing access to contacts, accounts and corporate structure information. For help with this resource: see staff at the Business Information Reference Enquiry desk.
Ordnance Survey (OS) digital data	Seamless, interactive mapping of Great Britain at scales of 1:1250 for urban areas, 1:2500 for rural areas and 1:10000 for moorland, supplied by this UK national mapping agency. NB: Only available from a terminal in the Maps Reading Room. For help with this resource: see staff at the Maps Reference Enquiry desk.
Ordnance Survey Maps of Cheshire	All 3rd edition (1900 to 1912) 25" to a mile maps of Cheshire (800 maps). NB: Only available from the standalone terminal in the Maps Reading Room. For help with this resource: see staff at the Maps Reference Enquiry desk.
Ordnance Survey Maps of Lancashire	All 1st edition (1888 to 1893) 25" to a mile maps of Lancashire (1400 maps). NB: Only available from the standalone terminal in the Maps Reading Room. For help with this resource: see staff at the Maps Reference Enquiry desk.
Ordnance Survey Mosaics	Scans of OS 1:1250 photomaps, which were based on 1945-48 RAF-flown aerial photography. NB: Only available from the standalone terminal in the Maps Reading Room. For help with this resource: see staff at the Maps Reference Enquiry desk.
Ordnance Survey Northern Ireland (OSNI) digital data	Seamless, large scale, interactive mapping of Northern Ireland, supplied by this UK national mapping agency. Available from 2004 onwards. NB: Only available from a terminal in the Maps Reading Room. For help with this resource: see staff at the Maps Reference Enquiry desk.
Ordnance Surveyors' Drawings	Scans of the original large-scale drawings made for the OS one-inch-to-the-mile maps, compiled between the 1780s and 1840. NB: Only available from the standalone terminal in the Maps Reading Room. For help with this resource: see staff at the Maps Reference Enquiry desk.
Orlando: Women's Writing in the British Isles from the Beginnings to the Present	Electronic textbase on the history of women's writing, primarily focused upon the British Isles, with biographical entries, from 8th century AD to the present. For help with this resource: see staff at the Humanities, Rare Books & Music or Social Sciences Reference Enquiry desks.
Ottowa ICA 1999	Proceedings of the 19th International Cartographic Conference. NB: Only available from the standalone terminal in the Maps Reading Room. For help with this resource: see staff at the Maps Reference Enquiry desk.
Ovum Enterprise IT Knowledge Centre	In-depth ICT analysis comprising Ovum, Butler Group and Datamonitor Technology research.  Covers IT services, software and enterprise IT management. NB: Ask at the Business Information Reference Enquiry desk for login details. For help with this resource: see staff at the Business Information Reference Enquiry desk.
Oxford Classical Dictionary	An electronic full-text version of the Oxford Classical Dictionary, 3rd edition, 1996. Over 6,000 entries on the ancient Greek and Roman worlds. For help with this resource: see staff at the Humanities or Rare Books & Music Reference Enquiry desks.
Oxford Dictionary of National Biography	An illustrated collection of 50,000 specially written biographies of the men and women who shaped all aspects of Britain's past, from the fourth century BC to the year 2000, with 10,000 portrait illustrations. Updated three times a year. The online Oxford DNB also includes the entire text of the first DNB. For help with this resource: see staff at the Humanities or Rare Books & Music Reference Enquiry desks.
Oxford English Dictionary	Online version of the Oxford English Dictionary. For help with this resource: see staff at the Humanities, Rare Books & Music or Manuscripts Reference Enquiry desks.
Oxford Journals Online	Online journals from Oxford University Press.
Oxford Latin American Economic History Database	The Oxford Latin American Economic History Database (OxLAD) contains statistical series for a wide range of economic and social indicators covering twenty countries in the region for the period 1900-2000. Its purpose is to provide economic and social historians worldwide with a systematic recompilation of available statistical information in a single on-line source.
Oxford Reference Online (Premium Collection)	Consists of 100 specialist and general reference dictionaries covering a wide range of subjects from social sciences, business, science, language, the arts, and history. For help with this resource: see staff at the Humanities, Rare Books & Music, Manuscripts, Science or Social Sciences Reference Enquiry desks.