This is a long shot, but I need help from any HAZ member who is familiar with the south rim overlook locations. The attached photo was taken in 1963 and is of me and my sister dangling our legs over the edge of the south rim. Obviously this was during a time when parents would not be arrested for child endangerment.

This would have been near the Village and the usual tourist stops of the time. Hopefully the bend in the river and other geologic formations will be sufficient clues. Photo comparisons will be the key obviously, so if you are bored to tears and have no life, please look through your photos and try to find a match.
The end goal of all this is to take my sis up to the GC and recreate the photo (even with a close match to the clothing) and give her both photos framed together as a gift. Thanks in advance for any help!