An article from American Machinist Magazine (January 4, 1923). The article, "The Organization and Management of a Medium Sized Plant," was written by Percy S. Brown, a Works Manager at The Corona Typewriter Company in Groton, NY. He would become vice-president of Corona in 1924. Here's a snippet on what went into making one Corona typewriter. "There are 671 parts on the typewriter, 139 on the case, 110 on the folding stand, a total of 920 parts. There are 355 different parts on the typewriter, 61 on the case and 37 on the stand, a total of 453 different parts. There are 1,999 manufacturing operations on the typewriter, 210 on the case, and 205 on the stand, a total of 2,414 operations, exclusive of inspection. To these must be added 38 subassembly operations and 15 assembly operations, a total of 53 assembly operations, and a grand total of 2,467 operations of all kinds, exclusive of inspection. If inspections are added, the total number of operations performed amount to approximately 4,600."