Clarifications:

In “Encountering Infectious Disease,” we called the Bubonic plague the deadliest pandemic in recorded history with “more than 25 million” deaths. A more complete estimate is 25 million to 200 million deaths. The caption about the West Coast smallpox epidemic of 17751782 mentioned gold seekers; in fact, they were involved in a later outbreak, in 1862.

In “Updating America” (June 2020), we noted that Jacob Lawrence’s “Struggle” Panel 21 depicted U.S. forces defeating Tecumseh at the Battle of Tippecanoe. While Tecumseh’s forces were defeated, the Shawnee chief himself was not present.