Biltmore Estate - Daily Life and Working Conditions, 1880-1920

[jjhunter]

Posting a request on behalf of a RQG Discord acquaintance

Any recommendations on sourcing some good primary sources for daily life at the Biltmore Estate in the period 1880-1920 beyond what's available on that Biltmore estate website?

Candel#5895 asks:

Looking specifically for details on the biltmore estate, but anything from that time period is golden, I’m after records of daily life especially among the servants and workers

They're also looking more generally for primary sources on comparable estates from that period:

Does anyone library or history minded know where I might find good primary sources and documents regarding working estates in Europe or the eastern US around 1880-1920?