Uncle Sam; Buddy Smith; Baker; The Black Legion (villains)
A strange plague strikes the navy shipyard rendering all employees blind. But Uncle Sam uses his audio phone, a machine that captures conversations from the past, to track down the culprits, who turn out to be Sam's old foes, the Black Legion. Sam alerts the military to stop the Legion and then cures the people's blindness.
Merlin the Magician [Jock Kellog]; General Sir Reginald Foxx (introduction); Killer Ernst (villain, introduction, death)
Jock is commissioned to fly General Foxx over Southeastern Asia, but they are brought down in New Guinea by Killer Ernst, an Austrian fifth columnist. Merlin's magical mastery, first with a cannon then a crocodile, makes quick work of him, however.
Lance Blackwood, according to the Who's Who, is a byline on this strip.
Credits from the Quality Companion (TwoMorrows, 2012).