Copies of two more issues are at:
   http://nanki-ml.dmc.keio.ac.jp/N-05_30_R084/index_3.html
This contain images of:
  Longman & Broderip "Twenty-Four Countra Dances for the Year 1796"
  Longman & Broderip "Twenty-Four Countra Dances for the Year 1799"
There are also adjacent web pages with other "Dances( for the Year" collections.