I first learned a little about him in reading the Christopher Love store (A Spectacle Unto God). Thomas Manton preached Love's funeral (which the sermon is included in the book). I am a Manton fan and look forward to other replies.
I see some 422 returns on that search, and among others, there is a thesis from 2008 by Derek Cooper, titled The ecumenical exegete : Thomas Manton's commentary on James in relation to its Protestant predecessors, contemporaries and successors
As you look through those 422 returns on "Manton, Thomas", you'll have to sort through whether a given item is included in his Works. Lotta work.
Stiff upper lip, old chap. You can do it.