The following images have been used in the Pens and patterns sequence:
| Image | Attribution |
| Agricultural Show | Scott O'Neill via iStock |
| Cute lamb, Isle of Skye | dapec via iStock |
| Smart farmer with notes for checking quality in hands on organic farm pig | tuaindeed via iStock |
| Grunge red proven word rubber seal stamp on white background | bankrx via iStock |
| Sheep Winning 1st Prize at Village Fair | DominicLemoinePhotography via iStock |
| Symbol. equal. equal. same. Written on a wooden block | iStock/35mmf2 via iStock |