 Complete the following phrase:  The Post was produced sheet by sheet on a flatbed press until 1926, when Guiton oversaw the introduction and operation of the first rotary press. Guiton remained the main proprietor and editor until the following year, when his son-in-law Arthur Harrison took over. The latter stayed in both positions until he was succeeded in 1944 by his son, Arthur G. Harrison. Under the Harrisons, the newspaper, while undergoing little technical change, saw testing times as the island came under 