William Francis Channing
... that William Francis Channing invented the first citywide electric fire alarm system?
... that <b id="mwBsM"><a class="new" data-mw-i18n='{"title":{"lang":"x-page","key":"red-link-title","params":["William Francis Channing"]}}' href="./William_Francis_Channing?action=edit&amp;redlink=1" id="mwBsQ" rel="mw:WikiLink" title="William Francis Channing" typeof="mw:LocalizedAttrs">William Francis Channing</a></b> invented the first citywide electric fire alarm system?