Seamless Core Pattern 10 #171
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Seamless Core Pattern 10

Source GDJ

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Retro Squares Background 4 #418
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Retro Squares Background 4

Source GDJ

Background pattern 328 (colour 5) #1797
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To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i

Source Firkin

Pinetree in tortoiseshell(亀甲松) #2538
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The image depicts a seamless pattern of Japanese Edo pattern called "kikkou-matsu" or "亀甲松" meaning " tortoiseshell-pinetree".The real pinetree is like this: https://jp.pinterest.com/pin/500744052301065077/

Source Yamachem

Background pattern 336 (colour 3) #1719
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Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.

Source Firkin