This page provides access to the translation planes of order 49, along with a smallish amount of associated data. I am always happy to provide additional useful information for researchers, so please mail me at gordon@cs.uwa.edu.au if you want anything.
Although it is a very large amount of data, there is a block-by-block listing of all 1347 planes.
This data is currently not well organized for the web. There is a main file listing all the spreads, together with auxiliary data called data49. There is a file containing a legend to this file.