Chiming in too-- so sorry for your loss! It is always devastating to lose chicks. A.T. Hagan's comments are pertinent, but there are weather extremes that make survival for wee ones (even 25 huddled ones) a challenge. Yes, hatcheries have been shipping for a long time, but our postal system is a lot larger now than in the past, and mail sorting a lot more complex. Boxes do get overlooked- put in inappropriate places; mishandled, etc. which with living beings, can mean life or death.
I work with a nursery here in Portland, OR that is the first business in town to offer chicks to backyard flock keepers many years ago. We know from experience that it is important to get your orders in early, but get your chicks shipped on later when temperatures are more stable. We have competition now with chicken selling amongst other urban homesteading focussed businesses. They all started selling chicks a few weeks ago. We are not. I don't think it's humane for the birds to be exposed to frigid temperatures or for you (and your family) to have to go through the emotional ordeal of their perishing. Just start a bit later. No matter what commercial hatchery you use- and I have used almost ALL of them (except Mt. Healthy- haven't tried them yet) you are going to have deaths if they are traveling during temperature extremes whether hot or cold.
The best hatchery I have used by far is a mom & pop based in Sandhill, IA- sandhillpreservation.com. They only offer straight run, and are a bit pricier than some, but the quality of birds and their vigor has been unsurpassed by any large commercial hatchery I have dealt with. You do have to mail in an order with your cheque, but they are outstanding. If they can't supply a breed in their catalog, they are extremely generous with substitutions or rebates.
Estes Hatchery in MO, and Texas Hatchery are also really good sources for commercial hatcheries. As for the one famous for sexing bantams-- absolutely not impressed with their sexing ability or their quality. Silkies with clean legs?
Highly recommend medicated feed for the first week (even though I'm an organics kind of girl) and putting some blackstrap molasses (1/2 tsp. per pint) in the water for electrolytes.
Hope this helps with future ordering experiences.....