In terms of clothes, Bananas is a good as a point of reference for how ivy league style developed in to the 70s...The news reporters at the start wear ivy styled clothes, but do look different. Same with Woody's style...blue and red candy stripe(thin, but bold in colour and texture so probably not on oxford cloth) with much bigger BD collars. Also the cut on his jeans and sneaks.

Same as Manhattan, all 'ivy' in it's basic details(tattersall BD and cords at one point) but again with bigger collars and flared bottoms.