That's great John, the first I've seen of Len Brownell's hand signature and much easier to find for reference.
I received an email from another reliable source about T&R as benchrest barrel fitters. In the case of this rifle I imagine they hired Brownell to stock their project, maybe(?) I think that this rifle is from the early 60s partially because it has a Redfield "Bear Cub" (not Kollmorgan) offered 1959-64.
I'm pretty sure in later years Len marked his complete custom jobs on the barrel for all to see.
A link to pics of the T&R Brownells rifle:
Brownell Rifle pics