Deedon
You may enjoy this huge website of mainly ALL COLOR PHOTOS (with a few B&W photos) created by Patrick Cullinan who has a nostalgia and love for the BMT Myrtle Ave EL like I had for my own IRT EL on 3rd Avenue in Manhattan long long ago.
https://pcullinan.smugmug.com/...l-Oct-1969/i-cXNGTjq
Patrick took these photos on and along the Myrtle Ave. EL generally in October 1969, the last month of operation on the Myrtle Ave EL. I was in the same area and on the EL as well as on the street and rooftops and along the entire EL -- taking my photos and color slides right up to the last night of service. However, besides the EL, Patrick focused a lot on the street scenes both from the EL and other viewpoints, including many buildings seen along the EL from trains or station platforms.
Here are a few photos by him (attached) at your Vanderbilt Station area and adjacent streets. I am sure you remember all these scenes and buildings from your old neighborhood. Many are still there today.
By the way, NO, per your question - Low-V's never ran on the Myrtle Ave. EL, that I know of, on the older portion BELOW Broadway Myrtle Jct in regular service or on any fantrips. Low-V's wityh passengers would be too heavy as all steel ALL MOTOR subway cars. A fantrip may have run from the Broadway BMT EL from Myrtle-B'way JCT up to the northern portion (heavier steel construction) outbound to Metropolitan Station and back inbound to connect back on to the Broadway EL. And if so, more likely in the years AFTER 1969 or 1970. I am not sure. But in the decades up to the closing the the lower older Myrtle Ave EL in Oct. 1969 BELOW Myrtle-B'way Junction, I am sure no Low-V's operated there.
regards - Joe F