Yes, I went to a fair number of shoots organised by Pat Wynn and got to shoot Stacey Owen, Danica, Vicky Lee, Kathy Shannon, Debee Ashby and many more delightful and well known young ladies.
I miss those shoots - the atmosphere was very friendly and the quality of models top notch.
I think by default, copyright belongs to the photographer not the model as it counts as "work for hire" - unless agreed otherwise beforehand (eg signing a model release releasing her from the default case). However, in organised shoots I suspect the copyright is retained by the organiser? But I am not a lawyer, nor do I play one on TV so I may be very wrong.
I'll assume I do not have copyright until somebody (eg Pat) tells me I do. Alas, in any case I have a few thousand negatives that are gradually fading and no decent film scanner.
However, I think "fair use" of discussing the topic allows me to post a small thumbnail of what was possible even when surrounded by a dozen or so photographers jostling for position if one is prepared to wait for the moment.