As Grandmother was wont to say:-
"Thank The Lord for small mercies."
With her usual inimitable skill, LA sent me something to build.
I found not the tiniest scrap of paper therein and was NOT looking forward to guessing how to assemble it.
Tonight I found "The Words".
What I think must have happened:-
When I removed the top, the entire "~F. M." must have followed the lid up, then plopped onto the highly cluttered desk top un-noticed.
However - - - "It matters not, one tittle or jot>>>" how it happened. What does matter is work can now commence. Eventually.