Over my Shoulder - ...'the huge farm Waterloo situated above Naivasha. This property was later bought by Sir John Ramsden and renamed Marula. Dr Doering originally acquired most of his land from the Government, on condition that he gave an undertaking to put 10,000 grade sheep on the place within a given period of time. The first consignment of Merinos was sent to him from the Orange Free State in S.A. but the losses were staggering and a further consignment from Wanganella in Australia fared no better.       

Sorrenson - In April 1905 a South African dentist, Dr. Doering, was granted a lease of 25,000 acres in the Rift Valley, on promising to spend £25,000 within 5 years.  

Norden - 1923 - Gilgil to stay with a friend, a bachelor, Dr. [Doering] - born in Ontario, nearing 70, had been a dentist in Johannesburg - on his great sheep farm - Waterloo Farm - mile 399.4 from Mombasa. ....... Dr's brother, summoned by runner from his farm 25 miles away

Bovill - pioneer sheep farmer Playne - A farm of which any settler might well be proud is that held by Mr G. Doering. 25000 acres in extent, it is situated between Gilgil and Naivasha, and has 2 rivers running through it. There are 7 miles of fencing, and the railway cuts through the property. About 1200 sheep are at present being raised, and several thousand more are to be imported. Stone bomas have been built for the accommodation of the animals.

Land - Doctor F.E. Doering leased 25,000 acres at Gilgil