How Delta amenity kits changed across the decades, from shoehorns to spa-grade toiletries

This is one of Delta's first amenity kits, introduced in 1978 - (Delta Air Lines)

The golden age of air travel is long gone, but the business-class amenity kit is one luxury introduced in that era between the 50s and 70s that is still with us.

Delta introduced it in 1978, at the tail end of the period, and has been keeping a photographic record of its evolution.