Pittsburg-Visible
				Pittsburg Typewriter Co., Kittanning and Pittsburgh, U.S.A.
Models and s/n	Y	M	D	Remarks	Ref.
				Developed from the "Daughtery (1890)". The "Daughtery" was produced in the Crandall factory in Groton first, then from the Daughtery Typewriter Co. in Kittanning	4
Model 9
up to 12000	1897				7,10,13
13000	1898				7,10,13
14000	1899				7,10,13
Model 10
up to 25000	1900				7,10,13
25650	1901				7,10,13
26350	1902				7,10,13
27000	1903				7,10,13
27600	1904				7,10,13
28225	1905				7,10,13
28850	1906				7,10,13
29475	1907				7,10,13
Model 11
up to 30000	1908				7,10,13
32500	1909				7,10,13
34700	1910				7,10,13
Model 12
up to 37000	1911				7,10,13
39600	1912				7,10,13
42200	1913				7,10,13
Model 15
up to 44800	1914				7,10,13
47400	1915				7,10,13
50000	1916				7,10,13
Model 20
68000	1929				7,13