See you liked he BMT . Standards running in the 1950s. I made the same trip at times. Would get on at Marcy Ave and change at Canal but would take the express trans from Canal up to Union Square or Herald Square. Sometimes we would walk up to North 7th street and take the Canarsie to Union Square . The Multi's ran in those days. At Union Square you could take the Broadway Local up to 28th street and walk back to Lionel at 26th street and American Flyer at 25th street.
I can remember riding the trolley car across the Williamsburg Bridge to get to Manhattan and Delancey street . The Trolley fare was normally 5 cents but you could board the trolley on the Bridge at Bedford Ave and ride to Delancey for a mere 2 cents . When Buses replaced the trolleys on the Bridge, this service from Bedford ave was eliminated.