From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
Zero CC tileable yellow craft paper; scanned and made by me. CC0
Source Sojan Janso
A pale olive green background with a seamless texture.
Source V. Hartikainen
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
From a drawing in 'Hundert Jahre in Wort und Bild', S. Stefan, 1899.
Source Firkin
A seamless pattern formed from background pattern 102
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A heavy hitter at 400x400px, but lovely still.
Source Breezi
Remixed from a drawing in 'A Girl in Ten Thousand', Elizabeth Meade, 1896.
Source Firkin
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
Here's a new gray "fabric" pattern. Use it as backgrounds for websites or for other purposes.
Source V. Hartikainen
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo