Otago Central Railway [59A]: Taieri Estate Sidings

As of now I am putting together the aerials needed to show three generations of siding development at Taieri Estate.
Using four images from DCC GIS I am joining these together to make a 1947 image of the aerodrome, which had a siding used to load fuel until the late 1950s. Right now as can be seen from this screen dump, I just have to mask off the borders so that I can get one single continuous image.
For the 1985 era there is one single aerial photo that covers the area, and for current I just use the Linz stuff as is.