based on the PBS film "Wyoming History Blizzard of '49",Givedetailsofthedocumentary,includingthetitle,director,originalairdate,intended audience, purpose, and main message of the director. Didyouknowanythingaboutthesubjectbeforeyouwatchedthedocumentary?Whatdidyou expect to see? What questions did you have about the subject? can you summarizethematerialsothatthereadergetsageneralsenseofallkeyaspectsofthefilm. Condense the content ofthe work byhighlighting itsmainpointsandkey supporting points. keep the summary objective and factual. Doyoulikethesoundeffects?Aretheimagessharp?Howisthefilming? Howisthecamera work? Do you like the interviews? Give examples - not just general statements. How does the documentary connect to the course? Does it reflect your personal life experience? Which part of the documentary do you like most? What have you learned from it? Was there anything that surprised you? What are the drawbacks of the documentary? Would you recommend this documentary to your family and friends?

reference: https://www.pbs.org/video/wyoming-pbs-documentaries-storm-century-blizzard-49/