12a Three part journey to the beginnings of Lake Erie (6) ?r???a, 17a Assistance given in return by Indian (3) ??l, 18a That is, she gets it in the end (5) ??n?m, 19a Men of metal right about tramp losing his head (5) r?b??, 1d Not coming-organising a road block perhaps? (8,4) stopping/a??? and finally 13d It comes out of the ground and works (5). Help please and thanks in advance.