And we have a winner!

Last night as I went to bed after posting my quiz, I thought, "Dumb idea-- nobody's going to answer." This morning I get up and not only is there an answer but a winner. Eric Baumgartner identified the three errors in the blurb describing the new Donner Party movie :

Based on the harrowing true story, The Donner Party picks up after William Hastings steers a group, nicknamed "Forlorn Hope," off course by promising a shorter route to California through the Sierra Nevada Mountains.

Eric posted to the comments section:

(1) Hastings' first name was Lansford, not William.
(2) The group that he led astray was not the "Forlorn Hope," but the Donner Party, of course.
(3) Hastings steered them to a shortcut through the Wasatch and across the Utah salt desert.

Absolutely correct! So, Eric, if you'll e-mail me (there's a link at New Light on the Donner Party) and send me your address, I'll mail you your postcard.