Yes it does. It's located in what was once known as Block 22. Potter's Field was part of the original plat for Lake Forest Cemetery when it opened in 1873.
In 2006, a man named Chuck Fuller told me he researched the area and figures there are at least 1,400 people buried there. However, much of the cemetery's records were lost in a fire in the late 1800s.
Out of the more than 800 names of people he did find that were buried there, Fuller said nearly half were children under the age of 1. The field was supposedly full in 1898, but Fuller's records indicate a few graves were added up to 1984.
In 1977, the Fant Monument Co. erected a granite monument in Potter's Field to note its existence.
By the way, the term "Potter's Field" is believed to come from a Bible story (Matthew 27:7), in which Hebrew priests take the 30 pieces of silver returned by a repentant Judas and "used the money to buy the potter's field as a burial place for foreigners." It was not called "the potter's field" because a potter owned it, but rather because the land was unfit to grow crops and only used by potters to dig clay.