Scope and Contents (3) ; D.W.4579.- ; At the river, the riders had to search in two feet of water for the submerged end of a pontoon bridge by which they crossed the river.  It was here that several riders came to grief.  Lieut. Lewman, (Nigeria Signals) is seen entering the river. ; ISSUED BY THE WEST AFRICAN PHOTOGRAPHIC SERVICE, REGIONAL INFORMATION OFFICE, ACCRA, GOLD COAST, BRITISH WEST AFRICA.--Recto ; WEST AFRICAN PHOTOGRAPHIC SERVICE OF THE  REGIONAL INFORMATION OFFICE; P.O. Box 555 ; ACCRA GOLD COAST...