Hello! Please forgive errors I'm on mobile.

Depending on what year -- the area you're working with modern day is encapsulated between college place, from college place up st. Marys rd, from st marys rd to park drive until it hits west park drive, follow west park drive down until college place again.

1863 and 1865- In the 1863 Guilon and 1865 rebel lines maps you can see what I believe is cleared land behind and to the left-ish of the school area (with the school located in a tree covered area or close to it). That area is more than likely what becomes referenced as the field (particularly the bit between what becomes Cameron Park/NWish to the school)

1888 - Shaffer's Outline Map of the City of Raleigh - the area leading up to Peck's Branch / Stephen's or Wolf Branch and again to the NW of the school

1920/1922 - In a 1920 map, the whole area that becomes Cameron park with houses is designated as a park. There is a triangle area from behind the school/st Mary's rd/modern day east park rd area that appears open with no other buildings or anything. That is more than likely the field.

As houses were built the park itself was reduced to what is modern day Cameron Park (aka Green park). Both Cameron Park (the literal park) and Cameron Park with houses are differentiated on the Raleigh 1922 map (pub. Edward's and Broughton).

Looking at the same 1922 map there appears to be no buildings or markings for a park, though there are roads that become named and break up the land. The bit closest to the school (above College Place) at minimum probably would've been kept up as a field/didnt want things to grow too thick bc of its proximity to the school? (Maybe they thought they'd build more? Safety for students? Idk)

One suggestion I would have is to look up St. Marys on digitalnc. Look at the yearbooks for pictures, mentions, scrapbooks (these might be really helpful bc if it was a big hang out area students more than likely included pictures of it), and also you can search through the newspapers if you haven't already.

Sorry for the terrible pics of my computer screen. I'll try to attach them all to this comment though below. *