Some images in essays are rendered sideways or rotated from what they should be. See https://github.com/cu-mkp/making-knowing-edition/issues/338
Diagnose why this is: source files themselves are rotated? GD perhaps stores them in a rotated form that then looks correct introduced as part of pull-down process?
command to check for orientation values in a given file (here, any .jpg in the current directory): exiftool *.jpg |grep Orientation