It looks like the play equipment might have been closer to the Maddelein corner than I remember it as well with diamond being in front of it to the east at one point.
The Engel house shows up in the DTE aerial shots as late as 1967. It can't be seen in the one from '49 because there are so many trees. This photo from '61 is clearer than the one from '67.
Attachment 6879
The next set of photos wasn't taken till '81 and the Engel house is gone by then, though the Salter house is still standing as can be seen in the cropped portion below. By '97 the Salter house is gone too.
Attachment 6880
Viewing the first 61 pic of the Engle house, I see the ball field is on the south side. I had thought, because when my daughter played ball against SJ back about 1990, the ball field was on the north side. Then looking at the 1997 pic it looks as if I remembered correctly.
I don't ever remember playing ball on the south side diamond. I remember having the end of year pinic at Heilman and using those diamonds. Anyone else remember if we ever used the play field for anything but American Football?