Mettler, H. (1987). Eureka 1887-1987: Centennial Anniverary Book; The Second Fifty Years. Western Painting Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMettler, Howard. Eureka 1887-1987: Centennial Anniverary Book; The Second Fifty Years. Aberdeen, South Dakota: Western Painting Company, 1987.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMettler, Howard. Eureka 1887-1987: Centennial Anniverary Book; The Second Fifty Years. Western Painting Company, 1987.
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