From the other side of the country, a good book by a Parker shooter in California is
75 Years with the Shotgun by C.T. Buckman.
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Buck bought the Parker Bros. A1 Special 28-gauge two-barrel set from from W.O Rowley in Dallas, Texas for $3000, used it for several years and finally sold it on for $4500.
There are several good books on the clubs and gunning around the Chesapeake by C. John Sullivan Jr. I have his book on the Carroll's Island Ducking Club and his book on Baltimore made shotguns.