Travelogue is an alternative spelling of travelog, which is a travel lecture, film or slides.
(noun)An example of a travelogue is an art teacher's talk and slide show of his trip around Europe visiting art.
See travelogue in Webster's New World College Dictionary
☆ or travelog
noun
Origin: < travel + -logue
See travelogue in American Heritage Dictionary 4
also trav·e·log
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