The Everest Marathon books:

1988 The Everest Marathon. The First Everest Marathon in 1987; (Sherpani, Diana Penny)
1990 1989 Everest Marathon. The Second Everest Marathon in 1989; (Sherpani, Diana Penny)
1992 1991 Everest Marathon. The Third Everest Marathon; (Sherpani, Diana Penny)
1994 Reebok Everest Marathon 1993. The Fourth Everest Marathon; (Sherpani, Diana Penny)
1996 Reebok Everest Marathon 1995. The Fifth Everest Marathon; (Sherpani, Diana Penny)
1998 Everest Marathon 1997. The Sixth Everest Marathon; (Sherpani, Diana Penny)
2000 Everest Marathon 1999. The Seventh Everest Marathon; (Sherpani, Diana Penny)
2001 Everest Marathon 2000. The Eighth Everest Marathon; (Sherpani, Diana Penny)
2002 Everest Marathon 2002. The Ninth Everest Marathon; (Sherpani, Diana Penny)
2003 Everest Marathon 2003. The Tenth Everest Marathon; (Sherpani, Diana Penny)
2005 Everest Marathon 2005. The Eleventh Everest Marathon; (Sherpani, Diana Penny)
You can buy all eleven copies here.