here are some of my wood sources:
www.inventables.com/categories/materials
www.trotec-materials.com
www.richardscraftwood.com
www.macbeath.com/
cherrytreetoys.com
www.realwoodpaper.com
https://www.glveneer.com
https://www.certainlywood.com
https://www.boulterplywood.com
https://www.oakwoodveneer.com/
https://www.dyed-veneer.com
http://www.thewoodgallery.com/
ocoochhardwoods.com
www.dndhardwoodsonline.com
https://www.richardscraftwood.com/
www.cardsofwood.com
http://www.infinitywoods.com
https://www.kencraftcompany.com/
Over the years, I have used them all. various strengths and weaknesses.