I received Mr. Bailey permission to publish his account of the process:
"I found the name MacDonough explained in Colvin’s 1874 Report probably mid 2012, but I saw it on early maps as far back as the 1985 Adirondack Museum exhibit, “History in the Mapping”. (They published a 72 page paperback of that title that year for $6.95 that might still be in stock) Colvin first put it on his map folded in the 1874-79 Report( that came out in 1879). Stoddard copied from Colvin. I’ve been collecting Adir. topo maps for years, successive editions. The 1953 Ausable quad is suddenly bursting with weird names where none were before...Bitch, Death, etc. Jennifer of USGS emailed me that they could find no field notes of the 1953 series for the Ausable Quad that first showed Slip."