…if it was still here it would probably be surrounded by sports bars. No thanks.

Thanks for passing along the research, though.

From Wikipedia:

This final incarnation of Recreation Park was on a block bounded by 14th Street (north, right field); Valencia Street (east, first base); 15th Street (south, third base); and Guerrero Street (west, left field). The stands were an unusual design, with a small lower deck topped directly above (thus protected from the weather) by a large upper deck, much of which was unroofed and open to the sunshine and the elements. The stands were also made of wood. A new, concrete ballpark, Seals Stadium, a mile east of Recreation Park, opened in 1931 as the new home of both the Seals and the Missions. Recreation Park was demolished and the site was converted into a housing project.

Here’s a pic of the stadium: http://sunsite.berkeley.edu/FindingAids/dynaweb/calher/graves/figures/I0030403A.jpg

And some awesome stuff from FoundSF:

1906–After the Great Earthquake a new ball park, Recreation Park was built in the Mission on Valencia between 14th and 15th streets. A section of the bleachers, roped off with chicken wire became known as the “booze cage.” Admission price entitled the patron to a choice of either a sandwich or a shot of whiskey. Spectators who frequented the “cage” were said to be knowledgeable, loud and abusive. The team name was changed to the San Francisco Seals. The Seals featured a “reversed battery” of Nick Williams and Orval Overall–one would pitch, the other catch, then the roles would reverse for the following game. Overall eventually became a 20-game winner in the National League.