hi there
your post caught my eye because of Ashcroft. i was reared at the Belt and Trench rd, Strabane old road junction, in a farmhouse known as Ashcroft. so i followed up your lead today when i was in Derry. I checked with locals and took some photos for you. which you probably already have from google anyway. you are right that Herbert St. was between the Chinese & Kiera's chippy. While Ashcroft place was along the side of Annies pub. Apparently Annies pub was moved. it used to be farther over to the left of the picture, where there is now a stone plaque. Because of events during the troubles it was tumbled. Annies now occupies the space at the other corner of the street that would previously have been Quiggs wee shop. It seems that Quiggs would have been the corner of Ashcroft Place. Hope this makes sense to you. I called in at Nippys taxi place and also asked further about possible pics of the area. He put in touch with another place that may be able to help, and apparently held a photo exhibit of the area last summer. with any luck it may prove fruitful for you. I will not post his details publicly. so will see if i can figure out how to private message you, or if you want to email me , you are welcome: See next post.