From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Prismatic Snowflakes Pattern No Background
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Remixed from a PNG that was uploaded to Pixabay by k_jprather
Source Firkin
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
This was submitted in a beige color, hence the name. Now it’s a gray paper pattern.
Source Konstantin Ivanov
Same classic 45-degree pattern, dark version.
Source Luke McDonald
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Background Wall, Art Abstract, Watercolor Vintage style CC0 texture.
Source Ractapopulous
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber