The ascent was questioned by powerful members of the Alpine Club and the Indian Survey Department, though not by their Himalayan climbing colleagues, and has been dismissed for most of the time since.

[1] If Graham, Boss and Kaufmann did climb to ~7325 m on Kabru it was a remarkable achievement for its time, breaking the existing altitude record by at least 360 m (assuming a pre-Columbian ascent of Aconcagua) and holding on to it for twenty-six years (when in 1909 an expedition led by Luigi Amedeo, Duke of the Abruzzi reached about 7500 m on Chogolisa).

The same peak nevertheless became the site of an undisputed altitude record on 20 October 1907, when the Norwegians Carl W. Rubenson and Monrad Aas came within 50 m of climbing it.

[1] The summit of this peak, Kabru North, was first reached by C.R.Cooke on 18 November 1935, without oxygen, after his Swiss companion Gustav Schoberth succumbed to altitude sickness at their highest camp.

[3] On May 10, 1994, 12 members of a large Indian Army expedition led by Major A. Abbey reached the summit of Kabru North (p. 7338).