15down,national poet,----,morgan.
52acc,grant,comic book writer,(8)m??r?so?,
41acc,(3,8)famous american geyser,o??,???t??u?.
3dwn,variety of parrot,(7,4),a???c?n,??e?.
42acc,(9),provide financial support,?u???????.
57accpalestinian organisation,(5)?????.
sorry i don't have many letters in most of these,
67acc,association for eggheads,m?n?a.