First, a portrait of The Manor, No. 45 and No. 25, made around 1929. The grassy area is the site of the future South Park; they haven't done much with the landscaping as it was then the famous Tudor City Miniature Golf Course.
Also around the same time, a photo was made of two benches and a large pot grouped together in the North Park. Behind it, the lattice-worked wall that's the western border of the park.
From the Daily News, May 17, 1939. Held from 1936‒1940, the tulip festival was an effort to have some good news during the Depression. More about it here.
A page from the July, 1965 issue of Tudor City View, enabling readers to identify the various trees of the North and South Parks. The parks were in terrible shape by then, but at least they could still name its trees.
The park's savior, John McKean, pictured at a community meeting. At the table beside him was a scale model and birds-eye view renderings of the two parks. What was said at this meeting is lost to time, but it is fine portrait of John McKean, selling an idea.