In the field of bookbinding, where does the term "Davey Board" come from?

Solution 1:

It would appear that the name comes from The Davey Company (Davey Est 1842) who invented and manufactured various types of board under the Davey trademark(s).

The company produces enough binder's board for 30 million books and has three factories and 300 employees. It is the country's largest manufacturer of binder's board and a pioneer in large-scale recycling. It also remains under the control of the descendants of William B. Davey, the founder.
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The company founder and family patriarch, William B. Davey, was born in 1789 in Somersetshire, England. He first visited the United States in 1816, returning with his family four years later. In 1827, in a transaction of some portent, Davey bought five acres of land in Bloomfield from the heirs of John Dodd.
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In 1830, Davey diversified from farming and entered into a partnership to make fustian, a tightly woven material favored for work clothes. And in 1842, in the start of the modern company, he began making binder's board at a mill in Bloomfield. At first, the board was used not only for book covers but also to construct strong, lightweight trunks for trans-Atlantic travel and Western expansion.

^{What Goes Into the Making of a Book's Cover, NYT (from Aug. 2, 1992) — paywalled}