The effort to expand the Park Slope Historic District is featured in the current (Nov. 2009) issue of the Civic News, the monthly publication of the Park Slope Civic Council.
The article profiles the work of two interns who are currently conducting formal research into the proposed expansion area in the South Slope. One intern is researching building files in Brooklyn's Department of Buildings, while the other intern is conducting field survey work under the direction of the city's Landmarks Preservation Commission. The interns' work is being funded by grants obtained by the Park Slope Civic Council.
The article may be accessed here (via "read pdf" link at bottom of page).