Parquet - or par-chaos?

My wife nipped out for a few things a week ago and in that time by the time she got back, The Stupid Fat Bloke had lifted the carpet in the front hall. Then the underlay. Then the lovely 1960s linoleum tiles (black, with some red, yellow and white). And finally revealed the original parquet floor. It's in pretty good nick, considering, although there are large gaps where previously there was a toilet and some vandal also lifted blocks, filling the gaps with screeding.

Hmm. Lovely, lovely linoleum 

These turn out to be Appalachian Oak, from Ritter of West Virginia, USA. It seems that they were quite well known back in the 1930s when this house was built, although it seems surprising they didn't use British flooring, as there must surely have been plenty about.

One area that lacks original parquet is where the kahrsi used to be, under the stairs:

New joists:

...and 22mm plywood:

The new / old (recycled) blocks have arrived. Cut down to the same dims. Looks as if they cam from and old school hall or gym:

Reproducing the original layout pattern:

The floor sanders have arrived. Start with the edges:

Before lifting the loose blocks I need to refix, out with the chalks. Don't want to lose their places.

These ones made it back home ok.

Ditto:

This will take some time to resolve......