Our Political prints are online both through the John Johnson Online Catalogue and (cross-searchable with other collections) through VADS (Visual Arts Data Service). If you are interested in the period around the French Revolution, you will find a rich source of imagery in the Curzon Collection. The Curzon prints are online through Digital Bodleian
However, most of the political material is not digitised and you will need to rely on the Indexes.
(C) John Johnson Collection: Queen Caroline folder (3)
(C) John Fraser Collection: GB3 (383)
In addition to the Women's Suffrage boxes in the John Johnson Collection, there are (catalogued) postcards in both the John Johnson Postcards box 12 and the John Fraser Coll of Propaganda Postcards.
There are postcards relating to the First World War in both the John Johnson Collection and John Fraser Collection. Material relating to the role of women is housed in box 20 of the Great War section of the John Johnson Collection There are also WW1 posters.
John Johnson did not collect the ephemera of the Second World War. However, there are international WWII postcards in the John Fraser Collection and a collection of small posters etc from Royal Institute of International Affairs (Chatham House).
Postcard showing women shell workers in Sheffield, 1916