The first known recipe for Clover Leaf appears in Jacob Abraham Grohusko's 1908 'Jack's Manual', while the first reference to and recipe for a Clover Club (unearthed by David Wondrich) is in a 23 June 1901 piece in the 'New York Press'. Quotes etc above and on our Clover Leaf page.
I just looked through ALL of the 1908 edition of Jack's Manual and there is no "Clover Leaf." I'm trying to clarify exactly where you found your reference.