Like its cross-border rival, the Canadian Pacific, the Great Northern published a brochure advising photographers how to take photos through the tinted glass windows of the dome cars. But where the Canadian Pacific brochure merely advised photographers to account for the tinting by overexposing the photos, the Great Northern (on advice from Eastman Kodak) suggested that photographers could use a CC30R filter to counteract the effects of the tinting.

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As shown below, CC30R filters have a rose tint, which apparently compensates for the green tint of the dome windows.