Clifford,

I'm very much a novice at this (SABR member less than one week), but
I'll give a theory on this subject a whirl. Online, I've found
excerpts from a book, The Boston Braves: 1981-1953, by Harold Kaese,
where, at page 8, discussing the 1871 origins of the Boston NL team,
Kaese writes, "For a park, the Boston club had leased the grounds known
as the Union Base Ball Ground at South End, near Milford Place." As I
read Kaese, this was to become the park known as South End Grounds. So
it is possible that "the Union grounds" mentioned in the Advertiser
article you refer to and South End Grounds are one and the same; that
is, the place was referred to by either name by some folks. This is an
inference I draw from the Kaese book. Hope I'm not leading you in the
wrong direction here.

Regards.

Steve Willoughby

Below is my effort at providing the link to the Kaese book excerpts:

http://books.google.com/books?id=SLF_umn--N4C&pg=PA38&lpg=PA38&dq=%
22boston+Unions%22+&source=web&ots=u5GtGoUHxs&sig=BJkP4fMk0WubhlhRt-
LbwNFLe2M#PPA8,M1






--- In SABRballparks@yahoogroups.com, Clifford Blau <brak2.0@...> wrote:

... it generally describes the games as
> being played at South End or the base ball park. But the August 19
> issue, reviewing the game of August 17, says it was played at the
> Union grounds. Does anyone know if this was another ball field
> sometimes used by the NL team?

> Cliff Blau