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The timeline can be navigated with the “Scroll Left” and “Scroll Right” buttons or by dragging the pointer to a date on the timeline waveform (located at the bottom of the screen on the desktop version and on the left of the screen on mobile). To filter by a particular topic and see a smaller section of the data, make a selection on the dropdown “Filters” menu or click “Search” to do a keyword search. Hover over the abbreviated filter tags in the blue boxes to see the complete name of the filter, or click a filter to display all the data with this tag. If you want to take a deeper dive into a specific topic by viewing a narrative essay page and a curated timeline, click on “Stories.”

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Magazine cover for "A Study In Scarlet" by A. Conan Doyle. A man in red sits in a chair with his face turned toward a source of light.
Cover of "A Study in Scarlet," the first story to feature Sherlock Holmes.

The Sherlock Holmes mystery fiction series popularizes cocaine.

1887

DRUG
Cover of "A Study in Scarlet," the first story to feature Sherlock Holmes.

In the books, Holmes uses cocaine to sharpen his deductory skills.