Lucky dude. I'm down to one box of 4x5 E100G in the freezer, and one unopened 20Pk of Ready-load sleeves, which I should probably use before it's too late. But the problem is that I don't have very many matching black and white sleeves at all - just half a dozen or so ACROS Quickload sleeves. Since I tend
to now shoot more black and white on backpacking trips than color, that ratio just isn't realistic. So this summer and fall I'll probably revert to either 6X9 roll film backs, using Ektar for color, or start carrying my film tent again, along with some 4X5 Mido holders. I no longer have the heat tolerance that I did when
I was younger, so lugging heavy packs has to be done either here on the coast for my weekly workouts, or preferably above 9,000 ft inland. I love some of
the colors one can get in hot weather. But I'm afraid Big Bend would be too much for me except in winter. Carry LOTS of water. Doubt the Rio Grande is itself
safe to drink, even filtered.