-Find the TfL webpage for WTTs. -Go to archive.org/web/ -Paste the TfL page link into the box on the Web Archive page. -Find the date you want at the top of the screen. -Click on that date and then go through and find the District WTTs.
(Note that not all District WTTs from history on the Web Archive are available for download - it's a sort of lottery as to what was archived and what wasn't!)
Hope this helps.
If you take issue with what I have said, please get in contact with me! Thanks.