I dedcided to do this because I wanted a main-line with a Duchess and diesel mixture, and I lived in Bare as a kid in the mid-1960s.
I started collecting information slowly in the mid-1990s, and have a fair amount now: These are the books that i have found the most helpful:
Ron Herbert, The Working Railway, both vols
Andrew McRae, British Railway Camping Coach Holidays: The 1930s and British Railways (London Midland Region), see pp.66-81.
plus the Darnborough book that you mention.
R Kirkman and P van Zellar, Rails to the Lancashire Coast - has a nice colour photo on the cover (shows the catch point clearly as of 1964), and on p.71 there is an LNWR period photo of part of the station and yard which shows part of a loading dock on the west side, which survived until at least the mid-1960s. (for which see also p.68 of the Camping Coach book). There was no buffer stop off the catch point line.
Websites: I have found a lot of photos by google image searches. Some of the best are some 15-20 colour photos in the mid-1960s by Geoff Plumb (google Geoff Plumb Hest bank and you will find the relevant section on his site). I didn't know the Cooperline site until yesterday, and yes, there's a lot there, must make time to go through it.
I got a set of about 30 contact prints of the 1965 crash clear-up from the archives of the Morecambe Visitor. Many are not great, but I ordered proper prints of three pix that had detail of the crossing etc.
Prototype workings: I have managed to get copies of the 1962 working timetables and the 1960 and 1961 carriage marshalling books plus a few STNs. I have the various appendices etc, and the only special instruciton that I've noticed abnd remember is a specification about the maximum number of wagons allowed on the Morecambe spur. FWIW I also have the freight WTT for Euxton Jn-Gretna Jn 21 Sept 1953 UFN, and the passenger WTT for 11 June-16 sept 1956. Very helpful for loco info are the WCML sighting reports being published by Chris Coates. I believe 1959 is available and that he wants to do earlier years as well.
So far as I have been able to establish, the up semaphore at the crossing was replaced with colour light some time between early June 1962 and April 1963 - I would love to know when. I assume that the bracket on the platform end was removed at the same time. The loop line in the yard was removed in August 1963.
I would like to get more information about the buffer stops. The platform line had a metal one, but i don't know whether it was LNWR or LMS pattern by the 1950s. The other line apparently had some kind of wooden concoction, but i have not found any clear photo. The platform line was skewed to avoid a small wooden (?) structure at the back of the down waiting shelter - no idea what it was or really what it looked like. See p. 68 of the Camping coach book.
I haven't done much research yet into the buildings on Marine Drive. Any info would be very welcome.
I am struggling to find pictures of:
1/ the two sets of tanks and huts serving the water troughs, on the east side of the line
2/. the down distant signal for Bolton le Sands crossing, located somewhere between Pasture Lane bridge and the foot crossing (I'd like to know exactly where)
3/ Pasture Lane bridge
As for my layout, no, I don't have enough room at home, I envy your shed. Nonetheless, the plan is 11 x 1m boards, covering the line from Pasture Lane bridge to the A5105 bridge. Phase 1 is to build the northern part, as far as the south end of the troughs: that's boards 1-6, which are all but ready for the track. Phase 2, in the distant future, will have the crossing and station on boards 7 and 8, then the cutting on boards 9-11. Boards 7 and 8 are built and awaiting cork underlay, whereas 9-11 aren't built yet. I haven't decided what to do off-scene - possibly cassettes. The latter are attractive because I am building in 2mm finescale, and the fewer points I need to build the better. Perhaps it's not impossible to mix cassettes with a through circuit capability. Whatever, i'm inclined to leave the Morecambe line as a branch to a dead-end.
Hope that's of interest, and if you can help with any of my queries, many thanks. Best, Tony H