104-10335-10001: Memo from AARB Executive Director to CIA Historical Group Director, May 30, 1995: https://www.archives.gov/files/research/jfk/releases/104-10335-10001.pdf
This document was sent by Assassinations Records and Review Board Executive Director David Harwell to the Director of the CIA Historical Review Group John Pereira. It offers a list of Agency cryptonyms and pseudonyms and requests officials to provide the corresponding true names or a general description of the type intelligence relationship the related person, group, or location had with official projects. The document affirms that LICOWL-1 was a "Double agent against Soviet target in Mexico City."
This information summary offers that notorious KGB officer Valeriy Kostikov who officials attempted to associate with Lee Harvey Oswald attended a "fiesta" held by LICOWL-1. At the Party Kostikov propositioned a local girl to be his girlfriend by offering her a weekly salary. (at p. 109): LICOWL-1 reported that Kostikov's wife (Rosa Aleksandrovna Kostikova, DOB 2/2/32) has blonde hair, blue eyes, short in stature and speaks excellent Spanish. She appears to be in charge of the Embassy kitchen.
The document states LICOWL-1 "...owns a small store near the Soviet Embassy" and he "reported that a Soviet official, AEQUALITY-1, had approached him and requested him to inform on his neighbors." This store was also located near a CIA base house undertaking surveillance operations against the Soviet Embassy in Mexico City.
This cable reveals that October 7, 1964 Aleksey Ivanovich Garmashov, the Deputy KGB Resident in Mexico City asked LICOWL-1 quarters above his store for rental purposes and noted that other local owners would not rent to Soviets. LICOWL-1 was unaware two local apartments recently vacated after the Soviet officials visit were housing CIA surveillance operations. "L-1 escorted G (Garmashov) to Apt top floor which G inspected closely. L-1 repports G looked out front window which faces LIMERICK for extended period."