My memories of this period are a mix of vivid and extremely muzzy. I cannot account for this.
I first went to the Empress, Harrogate in the early 60s, an upstairs romm with candle lighting and largely orange box seating. It relocated to the Clarendon (I think) and then to the West Park Hotel.
Great times, never bettered. During this time I also went to some clubs in Leeds/Beeston but the names of the venues escape me right now although the times were undoubtedly good.
Later to the Fleece at Addingham where as mentioned earlier in the thread the Sunday night sessions centered on David Hopton and Dave Harrison. I remember John Heap (Heapy) being the landlord and when he quit Hairy Dave took over. Tuesday night was more of a country night which my mate Stuart and I used as a practice night which turned into a session if the room started filling up.
I also remember the Watermill just outside Pateley Bridge.

Although I remember discussions about what was 'ethnic' (the term of the day) I certainly don't recall the intolerance and animosity which seems to be such a part of the folk scene today. But I could be wrong..........