SVG standard images found on chesstempo website:
https://www4.chesstempo.com/images/pieces/svg/merida/whitepawn.vers1.svg (...)
+ Adaptation for checkered pieces
Some fairy pieces found on the web and icon scout: https://iconscout.com/
PNG images for Eightpieces from https://greenchess.net/index.php and Jeff Kubach design.
Images of the Hawk and Elephant were designed by "Couch Tomato #2218" on Discord,
for the pychess-variants website (http://pychess-variants.herokuapp.com/)
He also designed all the Horde pieces in Orda, the Shako Cannon and Elephant,
the Sittuyin pieces set, and he sent me the wizard and
champion SVG files as well (modified from Wikipedia)