I should also consider that the user might have a typo or misspelling. If Nicki Thomas isn't the correct name, perhaps they meant Nicki Thompson or someone else. Another angle is checking if there's a model with a similar name around that time. For instance, there was a model named Nicki Thomas who was featured in Playmate of the Month, but maybe not in 1977. Maybe she was in a later year, like 1980s or 1990s?