Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 180
ut. TROJAN EXPLOSIVES The Mo^ Powerful MadeSafe and Economical Manufactured on a solid base and do not contain any liquidexplosive ingredient. Will not freeze Will not exude Will not give off noxious gases No thawing No leaking No headaches Caliiornia Trojan Powder Company PITTSBURG WATER HEATER… … 221 OaR Street Bet. Gough and Octavia San Francisco Page Two BUILDING AND ENGINEERING NEWS«HJ<HKHKHWKHKHKH5<KKHWKKH«H>1KHCHKHJ^^
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