G'day IanC,Sorry to look like I'm twisting your arm, but it is a long swim from Sydney to the British Library.
Actually, I should pose this question to Ron Edwards (about 2200 km north of me, in Kuranda) who did get to root through the broadsides in the major British / Irish collections (on a grant) back in the 80s. If Ron has any information, I will post back.
Regards,
Bob Bolton