Analysis of information sources in references of the Wikipedia article "The Boy from New York City" in English language version.
The Beach Boys had definitely been aware of that record — on their 1965 album Summer Days… And Summer Nights! they recorded an answer song to it, "The Girl From New York City": [Excerpt: The Beach Boys, "The Girl From New York City"] And you can see how influenced Brian was by the Ad-Libs record by laying the early instrumental takes of the "Good Vibrations" chorus from this February session under the vocal intro of "The Boy From New York City". It's not a perfect match, but you can definitely hear that there's an influence there:
