The one source I remember the best was an In Search Of episode. For my young teenage mind that was more easily fooled, my prospects looked rather chilling:
https://www.youtube.com/watch?t=1&v=1kGB5MMIAVA
IT ALL SEEMS SO HILARIOUS NOW!
Here's some actual article references interested in research. .
News articles*:
1970 – Colder Winters Held Dawn of New Ice Age – Scientists See Ice Age In the Future(The Washington Post, January 11, 1970)
1970 – Is Mankind Manufacturing a New Ice Age for Itself? (L.A. Times, January 15, 1970)
1970 – New Ice Age May Descend On Man (Sumter Daily Item, January 26, 1970)
1970 – Pollution Prospect A Chilling One (Owosso Argus-Press, January 26, 1970)
1970 – Pollution’s 2-way ‘Freeze’ On Society (Middlesboro Daily News, January 28, 1970)
1970 – Cold Facts About Pollution (The Southeast Missourian, January 29, 1970)
1970 – Pollution Could Cause Ice Age, Agency Reports (St. Petersburg Times, March 4, 1970)
1970 – Pollution Called Ice Age Threat (St. Petersburg Times, June 26, 1970)
1970 – Dirt Will .Bring New Ice Age (The Sydney Morning Herald, October 19, 1970)
1971 – Ice Age Refugee Dies Underground (The Montreal Gazette, Febuary 17, 1971)
1971 – U.S. Scientist Sees New Ice Age Coming (The Washington Post, July 9, 1971)
1971 – Ice Age Around the Corner (Chicago Tribune, July 10, 1971)
1971 – New Ice Age Coming – It’s Already Getting Colder (L.A. Times, October 24, 1971)
1971 – Another Ice Age? Pollution Blocking Sunlight (The Day, November 1, 1971)
1971 – Air Pollution Could Bring An Ice Age (Harlan Daily Enterprise, November 4, 1971)
1972 – Air pollution may cause ice age (Free-Lance Star, February 3, 1972)
1972 – Scientist Says New ice Age Coming (The Ledger, February 13, 1972)
1972 – Scientist predicts new ice age (Free-Lance Star, September 11, 1972)
1972 – British expert on Climate Change says Says New Ice Age Creeping Over Northern Hemisphere (Lewiston Evening Journal, September 11, 1972)
1972 – Climate Seen Cooling For Return Of Ice Age (Portsmouth Times, September 11, 1972)
1972 – New Ice Age Slipping Over North (Press-Courier, September 11, 1972)
1972 – Ice Age Begins A New Assault In North (The Age, September 12, 1972)
1972 – Weather To Get Colder (Montreal Gazette, September 12, 1972)
1972 – British climate expert predicts new Ice Age (The Christian Science Monitor, September 23, 1972)
1972 – Scientist Sees Chilling Signs of New Ice Age (L.A. Times, September 24, 1972)
1972 – Science: Another Ice Age? (Time Magazine, November 13, 1972)
1973 – The Ice Age Cometh (The Saturday Review, March 24, 1973)
1973 – Weather-watchers think another ice age may be on the way (The Christian Science Monitor, December 11, 1973)
1974 – New evidence indicates ice age here (Eugene Register-Guard, May 29, 1974)
1974 – Another Ice Age? (Time Magazine, June 24, 1974)
1974 – 2 Scientists Think ‘Little’ Ice Age Near (The Hartford Courant, August 11, 1974)
1974 – Ice Age, worse food crisis seen (The Chicago Tribune, October 30, 1974)
1974 – Believes Pollution Could Bring On Ice Age (Ludington Daily News, December 4, 1974)
1974 – Pollution Could Spur Ice Age, Nasa Says (Beaver Country Times, December 4, 1974)
1974 – Air Pollution May Trigger Ice Age, Scientists Feel (The Telegraph, December 5, 1974)
1974 – More Air Pollution Could Trigger Ice Age Disaster (Daily Sentinel – December 5, 1974)
1974 – Scientists Fear Smog Could Cause Ice Age (Milwaukee Journal, December 5, 1974)
1975 – Climate Changes Called Ominous (The New York Times, January 19, 1975)
1975 – Climate Change: Chilling Possibilities (Science News, March 1, 1975)
1975 – B-r-r-r-r: New Ice Age on way soon? (The Chicago Tribune, March 2, 1975)
1975 – Cooling Trends Arouse Fear That New Ice Age Coming (Eugene Register-Guard, March 2, 1975)
1975 – Is Another Ice Age Due? Arctic Ice Expands In Last Decade (Youngstown Vindicator – March 2, 1975)
1975 – Is Earth Headed For Another Ice Age? (Reading Eagle, March 2, 1975)
1975 – New Ice Age Dawning? Significant Shift In Climate Seen (Times Daily, March 2, 1975)
1975 – There’s Troublesome Weather Ahead (Tri City Herald, March 2, 1975)
1975 – Is Earth Doomed To Live Through Another Ice Age? (The Robesonian, March 3, 1975)
1975 – The Ice Age cometh: the system that controls our climate (The Chicago Tribune, April 13, 1975)
1975 – The Cooling World (Newsweek, April 28, 1975)
1975 – Scientists Ask Why World Climate Is Changing; Major Cooling May Be Ahead(PDF) (The New York Times, May 21, 1975)
1975 – In the Grip of a New Ice Age? (International Wildlife, July-August, 1975)
1975 – Oil Spill Could Cause New Ice Age (Milwaukee Journal, December 11, 1975)
1976 – The Cooling: Has the Next Ice Age Already Begun? [Book] (Lowell Ponte, 1976)
1977 – Blizzard – What Happens if it Doesn’t Stop? [Book] (George Stone, 1977)
1977 – The Weather Conspiracy: The Coming of the New Ice Age [Book] (The Impact Team, 1977)
1976 – Worrisome CIA Report; Even U.S. Farms May be Hit by Cooling Trend (U.S. News & World Report, May 31, 1976)
1977 – The Big Freeze (Time Magazine, January 31, 1977)
1977 – We Will Freeze in the Dark (Capital Cities Communications Documentary, Host: Nancy Dickerson, April 12, 1977)
1978 – The New Ice Age [Book] (Henry Gilfond, 1978)
1978 – Little Ice Age: Severe winters and cool summers ahead (Calgary Herald, January 10, 1978)
1978 – Winters Will Get Colder, ‘we’re Entering Little Ice Age’ (Ellensburg Daily Record, January 10, 1978)
1978 – Geologist Says Winters Getting Colder (Middlesboro Daily News, January 16, 1978)
1978 – It’s Going To Get Colder (Boca Raton News, January 17, 1978)
1978 – Believe new ice age is coming (The Bryan Times, March 31, 1978)
1978 – The Coming Ice Age (In Search Of TV Show, Season 2, Episode 23, Host: Leonard Nimoy, May 1978)
1978 – An Ice Age Is Coming Weather Expert Fears (Milwaukee Sentinel, November 17, 1978)
1979 – A Choice of Catastrophes – The Disasters That Threaten Our World [Book] (Isaac Asimov, 1979)
1979 – Get Ready to Freeze (Spokane Daily Chronicle, October 12, 1979)
1979 – New ice age almost upon us? (The Christian Science Monitor, November 14, 1979)
* A couple of the news stories are duplicates in different papers with slightly different titles, this is intentional to show that these types of stories were not isolated to a certain regional paper.
And from the National Center for Atmospheric Research: