Sanderson became Stanley 's private secretary in July 1866 and left an impression on Stanley after Benjamin Disraeli 's first government fell in the 1868 December General Election .
Stanley described him as ' the best of the juniors ' on exit from office .
Sanderson became Stanley 's private secretary in July 1866 and left an impression on Stanley , who described him as ' the best of the juniors ' on exit from office , after Benjamin Disraeli 's first government fell in the 1868 December General Election .