Wallpaper adhesive or wallpaper paste is a specific adhesive, based on modified starch or methylcellulose, used to fix wallpaper to walls.

Wallpaper pastes have a typical shear thinning viscosity and a high wet adhesive tack. These properties are needed to slow down the penetration of the adhesive into the paper and wall, and give slow bonding speed which gives the wallpaper hanger time to hang the wallpaper correct to the wall.

The wallpaper adhesive is applied to the wallpaper to let the moisture of the adhesive soak into and penetrate the paper. The paper will thus expand before hanging rather than on the wall, which would cause vertical bubbles in each panel of wallpaper as the adhesive dried from the edges in. When using nonwoven or glassfibre wallpaper—paper that does not expand—the adhesive is applied to the wall instead.

Wallpaper is a kind of material used to cover and decorate the interior walls of homes, offices, and other buildings; it is one aspect of interior decoration. It is usually sold in rolls and is put onto a wall using wallpaper paste. Wallpapers can come plain (so that it can be painted), textured (such as Anaglypta), or with patterned graphics.

Wallpaper printing techniques include surface printing, gravure printing, silk screen-printing, rotary printing, and digital printing. Mathematically speaking, there are seventeen basic patterns, described as wallpaper groups, that can be used to tile an infinite plane. All manufactured wallpaper patterns are based on these groups. A single pattern can be issued in several different colorways.

Wallpaper, using the printmaking technique of woodcut, gained popularity in Renaissance Europe amongst the emerging gentry. The elite of society were accustomed to hanging large tapestries on the walls of their homes, a tradition from the Middle Ages. These tapestries added color to the room as well as providing an insulating layer between the stone walls and the room, thus retaining heat in the room. However, tapestries were extremely expensive and so only the very rich could afford them. Less well-off members of the elite, unable to buy tapestries due either to prices or wars preventing international trade, turned to wallpaper to brighten up their rooms.

Graham Brown (October 24, 1924 – December 13, 2011) was an American actor best known for his work in the theatre.

Born Robert Brown in New York, New York, he is best known for his work on the stage. He attended Howard University where he earned a BA in theater. He also studied method acting at the Actor's Studio in New York. He began his career as a Shakespearean actor at Guthrie Theater where he appeared in productions like Hamlet and Richard III. Brown was an original member of Negro Ensemble Company (NEC) and played in many NEC productions like: Malcochon by Derek Walcott, Ceremonies in Dark Old Men by Lonnie Elder III, District Line and The River Niger both by Joseph A Walker. He was part of the original cast of controversial play Song of the Lusitanian Bogey by Peter Weiss which toured Europe and was subject to a riot in a London theatre in August 1968. Graham Brown was often cast as professional and/or highly educated people such as doctors and clergymen.

One of his best remembered roles was as "Jared Philibert", the 50-year-old patriarch of a Caribbean-American family in Steve Carter's critically acclaimed play, Nevis Mountain Dew. He originated the role in NEC's Off-Broadway production and reprised the role in the West Coast premiere of the play. For the latter he received a Los Angeles Drama Critics Circle Award for his performance.