As I may have mentioned early, sometime over the last 100 years all of the fuel filters had gone missing from my Stanley. From what I understand there is supposed to be one pilot fuel filter and two main fuel filters. They are very important because they stop the the flow of particulate from the tanks clogging the jets or causing the the steam automatic to stick open.
I got a hold of an original filter assembly from Alan Kelso of Steaman Inc. and had a few copied out of solid brass. Although not original, I will be adding a high temp Teflon gasket to make sure it will have a positive seal. I'd be willing to have some more manufactured if there is any interest.