The group of Scouts passed through Harrison County and Council Bluffs, Iowa, on July 28, 1928, en route from Carroll, Iowa, to Omaha, Nebraska.
Bernard Queneau kept a journal which has been digitalized by the Lincoln Highway National Museum and can be seen on its website, (I couldn't locate it, however).
The journey was actually the precursor of concrete markers that would be put up by the Boy Scouts a few years later. Some 2400 were built, one for each mile.
Mr. Queneau was born in Belgium and moved to Minnesota and then to New York as a child.