A document holder includes a casing and a lid for covering an opening of the casing. A quick-release device includes a strap engaging member fixed on the lid to define a strap engagement space with an entrance for access thereinto. A non-elastic strap has a fixing section fixed to the lid, a pulling section, and a middle section which spans a distal free end of the strap engaging member. A stop member prevents movement of the pulling section into the strap engagement space. An elastic strap is mounted on the casing, and is elastically stretchable to pull the lid to a closed position. Under this condition, the elastic strap passes through the strap engaging member and pulls the middle section into the strap engagement space such that the middle section defines an inverted U-shaped portion that straddles over a portion of the elastic strap in the strap engagement space and a U-shaped portion that inversely straddles over the distal free end of the strap engaging member.