As a runner for Power Memorial Academy in the 1960's, we used to practice on the track at 72d St and the Hudson River. To get there we would jog up 10th (Amsterdam Ave) past E40/35.
I remember the Autumn of 1961, when 40/35 occupied an old wood frame building adjacent to where their new quarters were under construction. It was probably an old stable, converted to a garage or warehouse, prior to the City renting it for temporary use as a firehouse. It was needed because 40/35's house (originally home to just the two sections of L35) was demolished in 1961 to make way for Lincoln Center and the new quarters were not yet complete.
Any body else remember that temporary house or, better still, any pictures of it out there?