Searching the Scottish Theatre Archive
Special Collections at Glasgow University Library host the Scottish Theatre Archive. And that means you can search their fabulous database.
For example, 'Whittaker' wanted to find out more about Hal D. Stewart, a playwright in our collection. Easy! I found all the biographical info I needed with this search link
You'll immediately see just how useful this is. Here's the basic search:- http://special.lib.gla.ac.uk/sta/search/