Patti pursues a contact who saw Hell's Angels kill someone at Altamont. The contact is Santana's back up singer, but the original Santana band that played at Altamont had no back up singers.
The series is supposed to be set in New York City, but when the staff members are getting coffee on the corner in the morning, the Haas Building in downtown LA is clearly visible behind them.
Some cars are clearly 1970s, even 1976.
Incorrect Saks Fifth Avenue Logo and mannequins. When Patti exits Saks Fifth Avenue, the door signage is the 2007 Michael Beirut designed square branding. The logo in the 1960s was the script logo straight across. In addition, the mannequins are from the 2000s. They would have used mannequins with wigs in the '60s.
At 00:21, a caption reads "DECEMBER 1969." At 38:58, there is a shot of Times Square, and an image of the Hotel Astor on the right. The Hotel Astor was demolished in 1967. Reference: "Remembering NYC's Grandest Forgotten Hotels, in Photos," by Jessica Dailey @JLDAILEY618, JUN 26, 2013. "William Zeckendorf acquired the hotel in the 1950s, but then he went bankrupt in '65 and the hotel was demolished in 1967."