There is a huge amount of material out there to find on these topics.
In Databases, search the fair title. Also alternatives. For example, the 1893 "Chicago World's Fair" is also called "The Columbian Exhibition."
On Google, try searching for the name of the fair, plus either "visual culture" or "artifacts" or "posters,:Suggested Search Terms" etc.
A search like this also provides good results: “world’s fairs and visual culture.”
If you find something written in the period you are studying, it may qualify as a primary source.
Entire run of Vogue magazine (US edition), from the first issue in 1892 to the current month with photos and ads. All searchable!
Vogue is perfect for historical research because it has every issue completely available going back to the late 1800s, including ads, articles, etc. All searchable by key word and date range. This amounts to PRIMARY sources. When off campus, login is required.
Full-text articles from 630 art and design magazines, 220 books, and 63,0000 images + 3,100 multidisciplinary periodicals.
Expanded access is now permanent. Access over 54,000 books and 2,600 journals from scholarly publishers across the fields of literature, music, film studies, folklore, performing arts, religion, art and architecture, and more.
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