What does a gas mask look like?

A modern gas mask looks like this: http://t1.gstatic.com/images?q=tbn:ANd9GcSkdVp-Q5EFqe49DfhFxmDA4_yUFzyP9a-Mxhignvn0mPIoRyg&t=1&usg=__0CfG9TBznkNGBgQRrPCDR8GsFwk=

A WW2 gas mask looks like this:http://t1.gstatic.com/images?q=tbn:ANd9GcQ66nyWr_R5FbZM6ps8ILPVPq9wUf9HRL8FzcRj5kZBHCBibWc&t=1&usg=__Tqy32_OALpSe4a0nQdyecFMOWBs=

Im sorry I couldnt put the pictures up directly, it wouldnt let me, but hope this is useful!