>Were they made of bamboo and canvas? More like lightweight cotton fabric and steel tubing or Sitka spruce. https://en.m.wikipedia.org/wiki/Aircraft_fabric_co

>Were they made of bamboo and canvas? More like lightweight cotton fabric and steel tubing or Sitka spruce. https://en.m.wikipedia.org/wiki/Aircraft_fabric_covering https://en.m.wikipedia.org/wiki/Aircraft_fabric_covering