These graphic files come from this web site
http://www.fortunecity.com/lavender/tombstone/890/srtree/srtree-index.htm

introducing the characters a01 to a20
the story part 1 b01 to b13
the story part 2 c01 to c20
the story part 3 d01 to d23
the story part 4 e01 to e23
2 other pictures f01 to f02