Shri Ravindra Sharmji is also affectionately called Guruji and he had set up and has been taking care of Kalashram (
http://www.kalaashram.org/p/about.html) since decades. Dharampalji personally spent a lot of time talking with Guruji and learning from him. While Dharampalji's records are largely based on his reading of the literature, Guruji's presentation is based on what he has carefully himself observed.
I visited Kalashram in December 2013 on the advice of Shri Pawan Gupta (see
http://www.swaraj.org/shikshantar/activities_uttarakhand.html) and spent 3 days listening to Guruji subsequently, I have met him on some other occasions and plan to attend a 3 day festival at Kalashram, Adialabad on 29th, 30th and 31st of March. Pawanji considers Guruji and Dharampalji as his two very important teachers.
I am sharing the lectures from two audio CDs of Guruji and transcriptions of some of them, all of which you can download:
Dhanyavad