[78-L] Longest 78

[agp]

I am curious - does anyone know what the longest 10-inch 78 is? A few 
years ago I saw (and lost out on the bidding on) a South African 78 
of the Marty Robbins hit El Paso on CBS from December 1959 (although 
no doubt early 1960 in South Africa). I was unsure if they split over 
two sides or not because the track weighs in at 5 minutes or so.

Anyone know of the longest 10-inch 78

Tony