For many years 'The Blue Page' was considered to be a sketch for Gainsborough’s most famous painting, 'The Blue Boy.' But, as George Wachter, Chairman, Old Master Paintings, describes, scholars now believe that 'The Blue Page' was painted a year after 'The Blue Boy.' Gainsborough was still interested in the subject, returned to it and finished it in the way he wanted it to look. This extraordinary portrait will be offered as part of Sotheby's The Collection of A. Alfred Taubman: Old Masters sale on 27 January in New York. Visit sothebys.com/taubman.