Thomas the Tank Engine (lost animated pilot 1973-1977)

LostThomas the tank engine(1973) was a animated musical television series planned by Andrew Lloyd webber and animated by Brian cosgrove in 1973 and cancelled in 1977 because the american market did not show interest

availity
until now, the only thing we have are his a mention of this pilot in the book thomas the tank engine man, and two pictures of this pilot