Sherman's Addn Block 13 SHERMAN'S ADDN BLOCK 13.tif BLOCK 13 Lot 7- Permit to H, Emmert, 1830 Island Ave. to erect a grocery store in the rear of 500 20th st., Zone R-4. Res. 69722 8-1-39 http://apps.sandiego.gov/directories/development-services/pdf/records/subdivision_cards/drawer_3/a_stratford_park/shermans_addn_block_13.pdf