@other{https://resolver.caltech.edu/CaltechAUTHORS:20220603-668319200,
    title = "Geologic map of the Mount Toby quadrangle, Massachusetts: surficial geology [Map]",
    year = "1951",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20220603-668319200",
    id = "record",
    doi = "10.3133/gq9"
}


@other{https://resolver.caltech.edu/CaltechAUTHORS:20220520-335649400,
    title = "Physical characteristics of commercial sheet muscovite in the southeastern United States",
    year = "1950",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20220520-335649400",
    id = "record",
    doi = "10.3133/pp225"
}