You are standing in front of an excellent example of the Mission Revival Style architecture. Pacific Telephone and Telegraph Co., was the first tenant and moved its main switchboard and business offices here in October 1910. Three "Number, Please" girls worked the switchboard during the day and one took the night shift. As more people obtained telephones, more operators were needed. In 1927, the phone company took over the entire building where they continued to operate until 1949. Over the years, the building had been dramatically altered. In 1991, using of old photos as a guide, the facade, with exception of entry and windows, was reconstructed to its original appearance .