Bradbury and his subscribers ( 61 , 63 , or 69 ) met separately on 9 March .
Bradbury and his subscribers ( 61 , 63 , or 69 ) sent off their advice on 7 April .
Bradbury and his subscribers ( 61 , 63 , or 69 ) met separately on 9 March , and sent off their advice on 7 April .