Indestructo Trunk Co.

Q I have a wardrobe trunk made by Industructo Trunk Co. that belonged to my great-grandmother. She was married in 1895 and died in the 1930s. The trunk has her monogram on it. When the trunk is standing on end, the left end opens up a rod that holds hangers. It has drawers and a hat box in it as well. It’s been years since it was opened, since my youngest locked it when he was five and I don’t have a key. It will have to go to a locksmith. I think the trunk is made of fiberboard. Any information would be greatly appreciated.