“Sarah Bernhardt et Louise Abbéma sur un lac” by Louise Abbéma is seen in the exhibit “The First Homosexuals: Global Depictions of a New Identity, 1869-1930” at the gallery Wrightwood 659 in Chicago on Nov. 4, 2022. (Terrence Antonio James/Chicago Tribune) Homosexuality has always existed. It just hasn’t always existed under a label or discrete identity. One might know that, in broad strokes, but it’s quite another thing to see that identity coalesce before one’s eyes. “The First Homosexuals: Global Depictions of a New Identity, 1869-1930,” a new exhibit showing through Dec. 17 at Wrightwood 659 in Lincoln Park, trades...