Maloof eventually gathered about 90 percent of her known work: more than 100,000 negatives, thousands of prints and hundreds of rolls of film she had never developed.
He co-directed a documentary about her with Charlie Siskel, called Finding Vivian Maier. In 2015 it was nominated for an Academy Award.
At one gallery, prints made from her negatives sold for $2,000 to $5,000 each.