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Here you can select or enter what you want to search for: designer, publisher, subject or date.
You can use one field or more, such as subject and date. Example: subject 'peace' and date 'before 1940' gives prewar peace posters.
With SHIFT-CLICK and CONTROL-CLICK you can select more than one search term. Example: subject 'culture' or subject 'radio' or subject 'music' gives posters on culture, radio or music.
Click the 'send' button to search, click the 'reset' button to start again.