Hi, Frances —
Thanks for the question.
I'm not sure how much I can help. Usually, to my knowledge, most historical information about anything unique to the parish can be found within the parish records at the rectory; just talk to the pastor.
If you are interested in historical information, not unique to Saint Juliana's, your best bet would be to search the New Advent web site @ https://www.NewAdvent.org/cathen. They have the Old 1917 Catholic encyclopedia on-line. This would help in discovering more about Saint Juliana and the other saints enshrined in the altar, assuming you can find out what saints have been enshrined in the altar.
The statues on the wall of the parish, and the stories of the windows would be unique to the parish's history.
Hope this helps,