Is there a small book describing who the puritans were. There is much made of their B&W dress but away from the Sabath they were accused of wearing riotous colours! This and many other misconceptions need addressing
There are several, I will suggest three:
Worldy Saints by Leland Ryken (Zondervan, 1986).
The Genius of Puritanism by Peter Lewis (Soli Deo Gloria, 1977)
Who are the Puritans by Erroll Hulse (Evangelical Press, 2000)
Now, there are many others -- but you asked for "small" books.
I'm sure Andrew will provide a FULL list...it's what he does!