2016-02-232016-02-231911-02Indiana State Board of Health. Monthly Bulletin. 1911; 14(2): 26.0019-6754https://hdl.handle.net/1805/8433Anti-dust device invented by C. F. Specht of Valparaiso.Epson Expression 10000 XL, Adobe Photoshop CS5, 1.39 MBPage26, middle of the right column, approximately 5 x 3 inchesPrinted photograph in periodical.Although these works may be freely accessible on the World Wide Web and may not include any statement about copyright, the U.S. Copyright Act nevertheless provides that such works are protected by copyright. Users must assume that works are protected by copyright until they learn otherwise.Sweeping and DustingHouse CleaningHousedustBrooms and brushesSpecht, C. F.ValparaisoPorter County