The Art Students’ League of New York turns 130 this year, and its history is chock full of legendary artists and impressive anecdotes. More importantly, the school has amassed an extensive collection of works by its former students, and many of the pieces are on display this fall at the school’s West Side headquarters. “And it won’t be partying alone. As an anniversary salute, more than a dozen Manhattan art galleries have organized smaller shows, some already on view, devoted to artists associated with the institution.”