McCosh Hall (built in 1906) was, as Woodrow Wilson announced, "the gift of a small group of friends of the University" who were also "devoted to the memory of James McCosh." When constructed it was the largest building on the Campus, extending four hundred feet along McCosh Walk and one hundred feet on Washington Road. It contained four large lecture rooms, fourteen recitation rooms, and twenty-six smaller rooms especially planned for the preceptorial conferences that had been introduced the year before.

McCosh Hall was designed by Raleigh C. Gildersleeve in the Tudor Gothic style of architecture then dominant at Princeton, with exterior walls of gray Indiana limestone. Situated at the crossroads of University life, the locus during term-time of daily faculty and student dialogue, the scene over the years of public lectures, open forums, class meetings, concerts, celebrations, demonstrations, and protests, it is like the man it was built to keep in memory: substantial, familiar, appealing, handsome, purposeful. It fulfills President Wilson's expectation that "this noble memorial to our beloved one-time leader" would be one of the finest ornaments and at the same time one of the most useful buildings on the Campus.

Source: Leitch p. 304

More information on McCosh Hall

McCosh Hall in Evolution of the Campus