Kwikset 663 One Sided Deadbolt - Thumb Turn Only, Polished Brass - Walmart.com
Leydebong 1 Pack Contemporary Square Single Cylinder Deadbolt Lock for Front Door Entrance Modern High Security Heavy Duty Finish in Satin Brass - Amazon.com
The Best Door Lock | Reviews by Wirecutter
Master Lock DSC0532D Commercial One-Sided Cylinder Deadbolt, Satin Chrome - Door Dead Bolts - Amazon.com
Stealthy retrofit smart lock hides inside the door