Top 3 Picks:

Ingle, H. Larry First Among Friends: George Fox and the creation of Quakerism (New York: Oxford University Press, 1996)

Trueblood, D. Elton The People Called Quakers (Richmond: Friends United Press, 1993; originally published 1966

Gwyn, Douglas The Covenant Crucified: Quakers & the rise of capitalism (Wallingford: Pendle Hill Publications, 1995)