The Civil War Relicman, Harry Ridgeway
	Winchester, Virginia  Civil War buttons bought and sold
	relicman.com

Ridgeway Reference Archive, Civil War buttons
Catalog of button backmarks
Lewis & Tomes, London and New York

Edward Lewis was a London England producer, apparently formed a partnership with Francis Tomes operating in New York starting 1819.  Tomes then operated under various names and making a variety of military goods through the Civil War.  

Most information on this page is from Tice's book, Dating Buttons..., and Bazelon and McGuinn Directory of Military Goods and Dealers...., the pictures are generally from buttons that I have handled.  

LewisTomes01, (21mm)

Backmark:  "LEWIS & TOMES. / EXTRA RICH." rmdc, an English maker operating a partnership in America, ca. 1820's or 1830's, (LewisTomes01).
Tice page 135, item count 1, [B14-14].

B5227     Federal artillery button, eagle over cannon facing right, one part flat, Lewis & Tomes Extra Rich, (21.4mm)
 

LewisTomes07, (23mm)

Backmark:  "LEWIS & TOMES / EXTRA RICH" rm between two rings with rounded border, flat one part button, ca. 1820's or 1830's, (LewisTomes07).
Tice page 135, not listed.