Walgreens Boots Alliance
http://www.walgreensbootsalliance.com/

Includes an illustrated company timeline.

Boots UK
http://www.boots-uk.com/

Includes an illustrated company timeline.

National Portrait Gallery (UK)
http://www.npg.org.uk/learning/a-picture-of-health/timeline.php

An educational resource which provides a timeline of Victorian medical pioneers.

Discovery, The National Archives catalogue (UK)
http://discovery.nationalarchives.gov.uk/

Includes descriptions of records held by The National Archives and many archives across the country.

The Archives Hub (UK)
http://archiveshub.ac.uk/

Includes descriptions of collections from UK archives.

Wellcome (UK)
https://wellcome.ac.uk/?gclid=COvs4JPJgtICFYYp0woddvUCcg

Includes information about the projects which the trust supports.

Museum of Science and Industry (US)
https://mschicago.org/

Includes a museum exhibit which is the recreation of the first Walgreens store.

Society of American Archivists (US)
https://archivists.org

Includes a directory of corporate archive collections within the US, under the business archives section.
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