The Cats of Lamu reviews by Kirkus Reviews and The Atlantic Monthly; originally published 1998; accessed 3 April 2016, via Amazon.com. This tertiary source summarizes another source in low detail.
Turner, Pat (February 1993). "Sokoke Forest Cat". Cat World. Chistiansen, Lene (photographer). Archived from the original on 3 July 2003. Retrieved 3 April 2016 – via FortuneCity.com.
Turner, Pat (February 1993). "Sokoke Forest Cat". Cat World. Chistiansen, Lene (photographer). Archived from the original on 3 July 2003. Retrieved 3 April 2016 – via FortuneCity.com.
For an example of mention of the "new line" and "old line" distinction, see any number of breeder materials, such as the 20 August 2005 update published by the Kimburu cattery in Denmark.