Some general information about architects and specific design projects like the Cameo Theatre can often be located on the web. Search in Google or another search engine by using keywords like: Day Walter Hilborn OR DW Hilborn OR Day W. Hilborn AND Cameo Theatre
When using web sources, you will want to think carefully about the credibility of the source. Ask yourself:
Use the General Reference Databases to find information about your topic!
Print and electronic Reference books and also have information on your topic (Example: Encyclopedia of Interior Design).