wrote:
i dont doubt contrails have been around as long as the Wright Brothers
but they certainly have not displayed the type of 'look' they have now
i.e. the way they just hang in the sky spreading out .... there are no
pictures pre 90's that show the type of con/chem trails seen now a days
- now prove me wrong

They look no different now than they did 50 years ago. Any photo will
show you that. You were provided with links to B-17 contrails in WW II.
They look no different in those photos than any contrails you see
today.

Some of the photos on the chemtrail web sites, however, have been
obviously doctored. You can see the Photoshop brush strokes in them.