When Monk shows Samuel his scrapbook of Trudy's murder, the photo of Trudy is of original actress Stellina Rusich.
The bodega on the corner, where Ansara Waingaya was killed by the hit and run van, was at the southwest corner of Taylor and Washington, in San Francisco. As of March, 2022, it has solid exterior walls and looks like a condo. The Venticello restaurant, next door at 1257 Taylor, was a San Francisco landmark for 29 years until it closed in late 2021, due to loss of business during the lock down. As of March, 2022, the restaurant's awning still bears its name.
Mr. Waingaya offers to pay Monk in Naira, the currency of Nigeria. One hundred Kobo go into a Naira.
Monk makes reference to a box van that says "pest control" on its side. Such a van was in Men in Black (1997), in which Tony Shalhoub played an alien.