How do collectors establish relationships with auction houses?

The direct way is usually the easiest way. That is: buy and sell art.

How do auction houses work? - Quora

What is the record for the highest selling price of a camera at an auction house like Sotheby's or Christie's? - Quora

What is the best way to establish a relationship with an auction house? - Quora

What is an artist's share of the resale value in an auction or sale? - Quora

What is the upcoming auction at Christie's featuring Charlie Watts' personal collection all about? - Quora

Why do auction houses charge a buyer's premium? - Quora

Why do some of the most savvy collectors in the whiskey industry turn to auctions such as those held by Sotheby's to build out their own shelves? - Quora

What is the upcoming auction at Christie's featuring Charlie Watts' personal collection all about? - Quora

How does an aspiring historic art collector with several thousand dollars saved find pieces to bid on to start their collection? Most online auctions seem to have ended already. - Quora

Are auction houses required to have certificates of authenticity to accompany their art consignments? Shouldn't this be required to save buyers from fraud and deception and getting fakes? What's the best practice