Mom strikes again!
I just found the negatives for these. She took pictures in 1956 and 1957 of the old and new Holy Trinity School.
The first image is the old building where the parking lot is now. The second is the foundation for the new HTS. You can see the backs of the apartment buildings at 46 and 50 Anderson St. These were taken on August 9, 1956:
The next two images show the convent, which looks almost completed, and the school, which has a way to go. These were taken on February 25, 1957:
The "new" school, according to her Daily Events book, opened a half-century ago on Monday, September 8, 1958 ("half-day!", she notes).
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