"Since the opening years of the century, Perkins Co. had made a specialty of carrying Smyrna opium to Canton; so did Joseph Peabody and every Boston or Salem merchant who could get it." p277 https://archive.org/details/maritimehistoryo0000samu_s0c4/page/276/mode/2up?q=Chinese ...
Clipper ships traveled at blistering speeds but conditions on board were brutal, and opium was their most profitable cargo. https://www.nationalgeographic.com/science/article/news-clipper-ship-opium-trade-gold-rush
How Opium Merchants Used Bankers, and Vice Versa American Merchants and the China Opium Trade, 1800-1840 https://quixoticjoust.blogspot.com/2013/12/how-opium-merchants-used-bankers-and.html
美国驻中国澳门领事馆领事报告(1849—1869)是广西师范大学出版社所出《美国政府解密档案(中国关系)》系列丛书之一种。它由美国驻华大使馆美国教育交流中心收藏的缩微胶卷“Despatches from U.S. Consuls in Macao, China:1849-1869”复制整理影印而成。内容包括美国国务院于1849年至1869年收到的驻澳门领事发来的函件 ...
https://www.forbeshousemuseum.org/opium-exhibition/zoom-talk-otis-edwards/ Otis Edwards 欧天思 The University of Hong Kong , History , Graduate Student +3 | Maritime History +4 Since arriving in Asia in 1989, ...