File:Acre (PSF).pngDescriptionAcre (PSF).png diagram of an acre. Source Archives of Pearson Scott Foresman, donated to the Wikimedia Foundation Author Pearson Scott Foresman
File:PSF A-10009.pngDescriptionPSF A-10009.png Raw image from Pearson Scott Foresman donation Date 12 December 2007, 18:47 (UTC) Source scans from source by Pearson Scott