Photos 1 & 2 by Tom Plimpton (1983).
Photo 3 by Earl Leatherberry (July 24, 2007).
Photos 4 & 5 by Dr. Ken Jones (2011).
Photo 6 Google street view (Sept. 2013).
Photo 7 Bing Map's bird's eye view.
Photos 8 & 9 by Nancy Fuel Neal (Nov. 15, 2014).
The series of photos shows an interesting progression from Tom Plimpton's 1983 views, where the Mail Pouch sign is the prevalent ghost sign, to Dr. Ken Jones 2011 photos which show Honest Scrap as the prevalent ghost sign.
Where to find it
119 W. Main St., in Arcadia. Southwest intersection on W. Main St. & the RR tracks. The building is on the left side of the street headed west through Arcadia. The MP sign faces east. One side. Two-story brick building. Original black background, now brick color. Greatly faded.