div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: mdhistorynet indexhtmlmdhistorymsamarylandgovmsa_sc3326scm8229pdfDUO-THERM OIL BURNING HEATERS One of the finest heaters to be had Does away with ashes and dirt and gives src=https:reader033fdocumentsusreader033viewer20220518055ff787d09e87a818f648f2ddhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv