Edwin Swope
... that Edwin Swope was the only warden of Alcatraz who did not have an escape attempt during his tenure?
... that <b id="mwCKA"><a href="./Edwin_B._Swope" id="mwCKE" rel="mw:WikiLink" title="Edwin B. Swope">Edwin Swope</a></b> was the only <a href="./Prison_officer" id="mwCKI" rel="mw:WikiLink" title="Prison officer">warden</a> of <a href="./Alcatraz_Federal_Penitentiary" id="mwCKM" rel="mw:WikiLink" title="Alcatraz Federal Penitentiary">Alcatraz</a> who did not have an escape attempt during his tenure?