There are 43 unique applicant surnames beginning with O:

O'Briant	O'Brien	O'Connor	O'Donnel	O'Harra	Obee	Oberdier
Obetz	Oborn	Obourn	Ockuly	Oehler	Ogan	Ogden
Ogle	Ohara	Ohaver	Olds	Oliver	Olmslid	Opphile
Oppihle	Orahood	Oram	Orders	Organ	Ormeroid	Orr
Ortman	Osborn	Osborne	Osbun	Osmond	Otte	Ousey
Outland	Overacker	Overfield	Overholser	Overly	Overturf	Owen
Owens

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