The subject is geography, from the LAT:

Donner Party — A map in Tuesday's Section A with an article about the Donner Party showed the wrong locations of three rivers. The Colorado, Rio Grande and South Platte rivers do not connect, and the Rio Grande does not flow in Wyoming.

Down below I corrected yesterday's Garthwaite item: the county health chief was not actually ordered to move his office to King/Drew Medical Center. But move he did, at least temporarily.