NBER (National Bureau of Economic Research)
This database specializes in subjects like economics, public policy, and business. More specifically this database is compiled of research regarding topics like the state of the aggregate economy, the fluctuations of the business cycle, economic effects of public policies and the other issues relevant to long term economic growth.
This database provides information via formats like books and working papers.\
I wasn’t able to find an option for controlled vocabulary in this database. But this database does constantly refer to “economics”, “policy”, and “business”.
This database has a unique window on its homepage titled “Most frequently requested items”.
AP Images (The Associated Press)
AP Images is a media archive composed of photographs, images, graphics, audio and text files in entertainment, fashion, news and sports coverage. This archive deals with a multitude of subject areas since it contains a diverse library of media. This archive is updated to reflect current events.
This is a media archive containing image files, audio files, video files, and some text.
There is no controlled vocabulary.
This database’s homepage is constantly updated with images relevant to current events.