I stumbled upon this while reading a detective novel An Innocent Client by Scott Prat.
Below is the phrase in context.
Landers ate lunch there two or three times a month. Even now and then he'd stop in and have a beer after work. He went to high school with the owners. And he knew several of the waitresses. Especially the waitresses. Landers had phone numbers for all of them.
My question is would it make sense if the man said he knew several waitresses there instead of knew several of the waitresses.
Thank you in advance.