Whistleblower (The Office) fourth appearance on the show, after first appearing in "Sabre". Zach Woods made his ninth appearance on the show. While talking with his real estate agent on his cellphone, Dwight states that the office park is 1725 Slough Avenue. "Slough" is a reference to the UK edition of "The Office" which is set in Slough, United Kingdom. In its original American broadcast, "Whistleblower" was viewed by an estimated 6.60 million viewers with a 3.4 rating/10% share in the 18–49 demographic coming second in its timeslot after the season finale of "Grey's Anatomy", receiving the same rating as last week's episode,
United States Post Office-Visalia Town Center Station United States Post Office-Visalia Town Center Station The Visalia Town Center Post Office is a registered historic building on Acequia Avenue in downtown Visalia, California. The Art Deco structure opened in 1933 and was added to the National Register of Historic Places in 1985 due to its architectural and engineering significance. It remains in operation as a post office. Commonly referred to as the "Downtown" post office or "TCS", the structure was built from 1932 to 1933 as a part of the New Deal's Works Progress Administration tasked by President Franklin D. Roosevelt to build infrastructure during the Great Depression.