https://www.tcdb.com/Person.cfm/pid/15889/Bob-Murdoch
While looking up Bob Murdoch here (above) and in Hockey Reference, I noticed a DOB difference between various sources. This site says 5/17/1947 ... most of his cards say 11/20/1946 ... but three of his Flames cards say 5/17/1947 ... but my 1976 & 1979 editions of The Complete Handbook of Pro Hockey say 11/20/1946 ... Hockey Reference.com says 11/20/1946 ... but my World Almanac Guide to Pro Hockey 1974-1975 says 5/17/1947.
I know, I have way too much time on my hands.