From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The starting point for this was drawn on the web site steamcoded.org/PolyskelionMaker.svg
Source Firkin
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
This is the remix of "polka dot seamless pattern".The image depicts polka dot seamless pattern.
Source Yamachem
From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
A bit of scratched up grayness. Always good.
Source Dmitry
A seamless pattern of "sewn stripes" colored in light gray.
Source V. Hartikainen
Abstract Tiled Background Extended 8
Source GDJ
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The image a seamless pattern derived from a weed which I can't identify.The original weed image is from here:https://jp.pinterest.com/pin/500744052301423641/
Source Yamachem