This is a reference post regarding Washington Sanitary Improvement Company’s (WSIC) properties.
Square 552
Lots 33-35 would have been 137-141 Bates St NW
Lots 49-60 — 1529-1551 3rd St NW
Lots 61-79 — 138-230 Q St NW
Lots 80-94 — 201-229 Bates St NW
Lots 98-100 — 132-136 Q St NW
Lots 104-106 — 131-135 Bates St NW
Lots 107-119 — 207-231 P St NW
Lots 120-131 — 1501-1523 3rd St NW
Lots 132-147 — 200-230 Bates St NW
Lots 148-150 — 201-205 P St NW
Lot 811 (now lot 221) — 130 Q St NW
Lots 816-818 (was 101-103) — 119-123 Bates NW
Lots 819-820 (originally part of lot 25) 125??-129?? Bates St NW. <- This will require more research.
Square 615
Lots 65-66 — 22-24 Q St NW (may need more research)
Lots 134-140 — (now 285-292) 31-43 Bates St NW
Lots 170-179 (now 811-818)— 46-60 Bates St NW
Lots 195-207 (now 293-304) — 55-77 Bates St NW
Lot 236 — 94 Bates St NW
Lots-237-244 — 15-29 Bates St NW
Lots 245-252 — 30-44 Bates St NW
Lots 253-256 — 45-51 Bates St NW
Lot 257 (now 806) — 12 Q St NW
Lots 258-265 — 62-76 Bates St NW
Square 617
Lots 169 to 183 (now 224-238) — 14-42 O St NW