A Half Post is established between London and Chester

Notice is hereby given, that the Post-master General bath for publick convenience caused a half Post to be established, whereby any person may be horsed at the Post-house at the White Horse in Barbacan, every Monday, Wednesday and Friday after the 16th day of this instant April, 1670, to ride post from London to Chester without charge of guide at Three pence the mile, and be likewise horsed in the same manner at the Post-house in Chester to ride post to London.