To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless paper background colored in pale yellow.
Source V. Hartikainen
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Sharp but soft triangles in light shades of gray.
Source Pixeden
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
A bit of scratched up grayness. Always good.
Source Dmitry