@other{https://resolver.caltech.edu/CaltechAUTHORS:20120207-163633236,
    title = "Palomar Observatory Hale Telescope : Prime Focus Nebular Spectrograph Log Book",
    publisher = "California Institute of Technology",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20120207-163633236",
    id = "record"
}


@other{https://resolver.caltech.edu/CaltechAUTHORS:20120208-102019792,
    title = "The New Hale Spectrohelioscope",
    publisher = "Caltech Library",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20120208-102019792",
    id = "record"
}