I'm presuming the grounds were within Lincoln Park,
the large public park in the West End, which seems to
be long gone. (I've never been to Cincy, so stop me if
I've made a howling error here)

From ProQuest, not much help location-wise, but a
little, and some lovely detail:

Boston Globe, August 9, 1872.

Lincoln Park has eleven acres of made ground in Mill
Creek "bottom." It was once a graveyard for paupers.
Full thirty feet of earth has been placed above their
bones to make the park. It contains a lake with an
island in its midst. A canopied monument guarded by
two sculptured lions, and conraining a bust of
President Lincoln is a present to the park.

The Ohio Farmer, Octover 23, 1875 simply says Lincoln
Park is in a "central part of the city."

NY Times, February 12, 1884, gives a better clue:

Lincoln Park was entirely inundated, and the waters
were creeping over Freeman-avenue, Bay Miller and Linn
Streets.

Nothing useful on Avenue Grounds, but I'll keep
looking.

Hope this helps,

- David Dyte

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