https://digitalcollections.lib.uh.edu/catalog?f%5Bgenre_sim%5D%5B%5D=political+cartoons&f%5Bgenre_sim%5D%5B%5D=documents+%28object+genre%29&f%5Bresource_type_sim%5D%5B%5D=Image&locale=en
Genre: political cartoons and documents (object genre) // Digital Collections Search Results Page 1
search results pagepolitical cartoonsobject digital
https://acdroi.org/
ACDROI - Academic Citation & Digital Research Object Identifier
Academic Citation and Digital Research Object Identifier - Persistent scholarly identification, archival preservation and global dissemination of academic...
academic citationdigital researchacdroiobjectidentifier
https://en.wikipedia.org/wiki/Doi_(identifier)
Digital object identifier - Wikipedia
digital object identifierwikipedia