Calmenson, Wendy Cunkle (Spring 1977). "'Likenesses taken in the most approved style': William Shew, Pioneer Daguerreotypist". California Historical Quarterly. 56 (1): 4–5. doi:10.2307/25157680. JSTOR25157680.
Calmenson, Wendy Cunkle (Spring 1977). "'Likenesses taken in the most approved style': William Shew, Pioneer Daguerreotypist". California Historical Quarterly. 56 (1): 4–5. doi:10.2307/25157680. JSTOR25157680.
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"William Shew". 19th & 20th Century Photography. Retrieved 2018-07-09.