Dooyeweerd and Van Til?


Puritan Board Graduate
I know that these two great thinkers, who have both influenced me, were at one time friends but later after Dr. Knudsen went to study with Dooyeweerd (at Van Til's encouragement) the two men began to have differences. I have Frame's account of it. He states that Knudsen and Van Til had a good relationship but that Knudsen was "caught in the crossfire". I have Van Til's festrift with the interactions of these men but Im wondering if there are any books (papers?) written on the relationship between these men?

I also have Knudsen's book "Roots and Branches" which is an amazing collection of essays. But has anyone dug into the history of these men (Dooyeweerd and Van Til primarily) and their changing thought?