Many useful primary sources will be collected in print or ebook compilations, with several texts or images on a related topic collected in a single volume. The Towns of Italy in the Later Middle Ages is an example of such a source.
Subjects that are useful for finding primary sources in OBIS and Summon:
Summon indexes the full text of some (but not all) of our print sources. Therefore it can be useful to combine a subject search for subject headings associated with primary sources with a keyword search for more specific concepts. The proximity search can help ensure that multiple concepts are addressed in the same text inside a collection.
To find books where the word city and the word food appear within 100 words of each other, you would use the following search in Summon:
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