However, the old 'facts' have become so embedded in the secondary literature
Yes, and we have to correct them even though it goes against conversional wisdom.
I mentioned about what is anyone doing about it, I have amassed the actual true facts about my old branch line.
Many of these facts you will not find in any books, some you will, but here are the true facts.
I can back them up with credible sources of documentation too:
The Great Harwood Loop line:
Closure dates / facts 1963 onwards.
Padiham station yard become a coal depot only 7/10/1963 i.e. no general goods handled.
A closure meeting was held at Blackburn station 13/5/1964 (I have the minutes of the meeting).
Original closure date for Great Harwood & Simonstone was 7/9/1964 (letter).
Another letter 4/9/1964 postponed the closure until 2/11/1964.
The signal boxes at Great Harwood West & East plus the one at Simonstone close at the same time 2/11/1964.
Both stations and buildings demolished Oct-Dec 1965.
Same time as the demolition, the Down line was removed from Blackburn to just outside Padiham leaving 1 mile, 51 chains left.
Padiham station was demolished 19/8/1967.
August / Sept 1967, the Up line was removed from Blackburn to the western end of Padiham power station leaving 1 mile, 71 chains left.
Padiham junction (Rose Grove on the East Lancs line) to the power station remains at this point double track.
Padiham goods yard (already coal only) closes 17/6/1968.
The Down line from Padiham junction to the power station is removed over two weekends 22, 23, & 28, 29 June 1969 leaving just the Up line.
Padiham signal box closes 30/6/1969 (the day after).
After the closure of the power station the line remains extant until 20/5/2008 when the final section is lifted.
Official!
I can cite all of the facts, we just have to shout loud enough and long enough.