This was a good representation of the size of Sutton High boys in 1969. I don't know about the size of your grandsons, but....
The 1969 Sutton High Football Schedule
Advertising in old newspapers provides a good first cut at identifying the business climate of the time.
Count the bars, cafes, and restaurants. Count the barber shops and beauty shops. Groceries and retail outlets.
The population of Sutton was similar between 1969 and today. What was different was the density of farmsteads. The farms got bigger and the people got fewer. Fewer farmers meant less business being conducted. As businesses closed, the trend spiraled. The phenomenon was even more pronounced in many surrounding communities - think Harvard, Clay Center, Ong, Edgar, Grafton, Fairmont.
Comparatively speaking, Sutton has held its own, probably also Henderson. Slightly larger communities have fared better. Think Geneva and Aurora. York and Seward are a step up and sustained themselves well - diversity.
The postmaster position was a political appointment through much of our history. Each presidential election that changed the political party of the president triggered a near wholesale turnover in each and every post office. A few incumbents were seen favorably by each local political party, but usually the normal brought a new face to the office.
There was a competitive examination to qualify for the position. In this case Guy Matteson was replacing Frank Weston who had resigned in 1944.
This 1919 item in The Harvard Courier was a bit of early Harvard history from Tom Matters.
Tom Matters made news during this period for his participation in a banking scheme by Melchoir Luebben that led to the demise of the 1st National Bank of Sutton and the opportunity for the two men to enjoy some time off in state lodging facilities.