Hello to all friends here at Brethren Archive.

I would like to know how reliable (historically) is Roy Huebner's "J.N. Darby Precious Truths Revived and Defended", available at Present Truth Publishers.

Volume I "Revival of Truth 1826-1845" https://www.presenttruthpublishers.com/pdf/Darby_Precious_Truths_v1.pdf
Volume II "Defense of Truth 1845-1850" https://www.presenttruthpublishers.com/pdf/Darby_Precious_Truths_v2.pdf
Volume III "Defense of Truth 1858-1867" https://www.presenttruthpublishers.com/pdf/Darby_Precious_Truths_v3.pdf 

Obviously, the judgments he made regarding the events are according to his particular "TW" views. My question is more related to the historic events per se.