Photo 1 - View of four special operators at the Boulder Mountain States Telephone office calling subscribers to explain change to dial service and have customers place a test call. Machines on the table recorded customer's test call to show whether the number was dialed correctly, 24 January 1954.
Photo 2 - View of a demo panel to teach residents about dial service, 30 January 1954.
Photo 3 - Men cutting cables in the old telephone building at 1319 Spruce Street, 11:59 pm, 6 March 1954.
Photo 4 - Men pulling 6,250 blocking tools which held open relay contacts at the new building, 1545 Walnut Street.
Photo 5 - View of a switchboard in the new building at the moment of the cut-over.
Photo 6 - Men at a switchboard making test calls to important services immediately after the cut-over, with LeRoy K. Anderson, Boulder district plant supervisor, observing.
Photo 7 - Top Boulder executives at the cut-over, (l-r) Clifford C. Rafferty, Boulder manager; Paul C. Helwig, Boulder traffic chief; James M. Parker, Boulder district traffic superintendent; and Orin A. Weichel, Boulder district manager.
Photo 8 - View of installation project officials V.L Fieldstad, Herbert J. Strelesky and George E. Ihle in front of a line frame in the new building.
Photo 9 - View of Leslie B. Wolf, cut-over supervisor, at a special switchboard to coordinate cut-over activities.
Photos 10-13 - Views of Mountain States employees from Boulder and Denver present at the cut-over including V.E. Kellogg, Donald R. Spangler, Edward F. Bird, R.W. Lindsay, Walter K. Koch, Andrew Horan and Lowell F. Wingert.
Photo 14 - Group photo of people present at the cut-over including Mountain States President Walter K. Koch (left), Vice President Lowell F. Wingert (center, in back), Boulder District Manager Orin A. Weichel (third from right) and Colorado General Manager Andrew Horan (second from right). Photo published in The Monitor, May 1954 with full set of names, see 328-167-7 for clipping.
Photos 15 and 16 - Views of dial telephones. Photo 15 dated 4 May 1953 on back.