Polio https://www.americanheritage.com/ en 50 Years Ago, the Polio Vaccine Was Introduced https://www.americanheritage.com/50-years-ago-polio-vaccine-was-introduced <span property="schema:name" class="field field--name-title field--type-string field--label-hidden">50 Years Ago, the Polio Vaccine Was Introduced</span> <span rel="schema:author" class="field field--name-uid field--type-entity-reference field--label-hidden"> <a title="View user profile." href="/users/frederic-d-obrien" lang="" about="/users/frederic-d-obrien">Frederic D. O&#039;Brien</a></span> <span property="schema:dateCreated" content="2011-01-21T11:07:40+00:00" class="field field--name-created field--type-created field--label-hidden">Fri, 01/21/2011 - 06:07</span> Fri, 21 Jan 2011 11:07:40 +0000 Frederic D. O'Brien 61476 at https://www.americanheritage.com Fighting Ghosts https://www.americanheritage.com/fighting-ghosts <span property="schema:name" class="field field--name-title field--type-string field--label-hidden">Fighting Ghosts</span> <span rel="schema:author" class="field field--name-uid field--type-entity-reference field--label-hidden"> <a title="View user profile." href="/users/geoffrey-c-ward" lang="" about="/users/geoffrey-c-ward">Geoffrey C. Ward</a></span> <span property="schema:dateCreated" content="2011-01-21T09:47:41+00:00" class="field field--name-created field--type-created field--label-hidden">Fri, 01/21/2011 - 04:47</span> Fri, 21 Jan 2011 09:47:41 +0000 Geoffrey C. Ward 58859 at https://www.americanheritage.com FDR’s War with Polio https://www.americanheritage.com/fdrs-war-polio <span property="schema:name" class="field field--name-title field--type-string field--label-hidden">FDR’s War with Polio</span> <span rel="schema:author" class="field field--name-uid field--type-entity-reference field--label-hidden"> <a title="View user profile." href="/users/geoffrey-c-ward" lang="" about="/users/geoffrey-c-ward">Geoffrey C. Ward</a></span> <span property="schema:dateCreated" content="2011-01-21T06:58:49+00:00" class="field field--name-created field--type-created field--label-hidden">Fri, 01/21/2011 - 01:58</span> Fri, 21 Jan 2011 06:58:49 +0000 Geoffrey C. Ward 55214 at https://www.americanheritage.com