Re: Clean and coat uncovered wood floors
Considering the age, it is most likely an oil based poly or varnish. You can eliminate shellac by finding an inconspicuous place and apply some alcohol and rub. If it is shellac the alcohol will dissolve the finish. If it is not shellac clean it with TSP, and if the finish is dull a light sanding with 220 grit sandpaper, vacum, and clean with a tack cloth and apply a new coat of floor rated poly.
Be sure you live your life, because you are a long time dead.-Scottish Proverb