From here on, White Watson became a finisher of marble—for many years a considerable part of his business continued to be gravestones and monumental church marbles—and a fossil and mineral specimen dealer from his own premises in Bakewell which he maintained as a shop and museum for his collection until his death.
Sejak saat itu, White Watson menjadi pemoles marmer - tahun-tahun kemudian sebagian usahanya berlanjut ke usaha batu nisan dan marmer monumen gereja - dan usaha batuan mineral serta fosil dari tempatnya sendiri di Bakewell dijadikannya bengkel kerja dan museum untuk koleksinya sampai ia meninggal.