But in the November 5, 1927 issue of The New Yorker there are a few paragraphs about the mysterious Eeko and Iko:
Even out of season, circus freaks are a major interest with us, none more so than Eeko and Iko... The two strange twins have been billed as "ambassadors from Mars..."Mount Everest? Shed their hair? Yeah right. Still, I'm fascinated by the strange spot that freaks held in society during the first half of the 20th century: respected and in some ways admired as long as they stayed in their tents.
We have been acquainted with the pair for several seasons, and they were good examples of contented freaks... It had been their happy fate always to wear full evening dress with a brilliant red ribbon across their shirt fronts. This alone would have sufficiently amused and contented them.
With Eeko and Iko their unusual flaxen hair was their principal distinction. It looked like cotton and grew in conical clumps. They were said to shed it from time to time, as a chicken moults. Scientists pronounced them subnormal; their reflexes were slack, and they dithered as they walked. Their eyes didn't quite focus. They appeared to be Albino negroes, although it was intimated that they were picked up on the slopes of Mount Everest, or thereabouts.
By the way, I've never heard the word "dither" used in this way. I'm familiar with it meaning a sort of indecisive wandering, and apparently it can also be a sort of shiver/shake action. Did Eeko and Iko shiver as they walked?
The early morning time-crunch and a misspelled "Eko" in The New Yorker kept me from finding what Morgan James discovered today: "Eko and Iko" are by no means forgotten. The Human Marvels can tell you everything you need to know about "The Sheep-Headed Men."
Curiously, their career was temporarily ended when their long-lost mother finally tracked them down. This article in The New Yorker was prompted by that very incident (which is why they keep being referred to in the past tense). So while Eko and Iko may not be the mysteries I thought they were, this article at least is commenting on a significant moment in their careers.