James Dwight & H. C. Leeds 
Laws of Euchre [PDF ebook] 
As Adopted by the Somerset Club of Boston, March 1, 1888; With Some Suggestions About the Play

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The Laws Of Euchre, as here appended, have stood the test of time and received the attention of many scientific Euchre players.