Big Bad Wolf's next appearances on the covers of Mickey Mouse Weekly were on issues no. 6 and no. 7:
Note that the Big Bad Wolf's pose in drag on the cover of no.7 is from a scene in the cartoon The Big Bad Wolf (1934) which was also depicted in the illustrated story book Big Bad Wolf and Little Red Riding Hood (see below posts for scans) from that same year.
The artist who illustrated the covers of Mickey Mouse Weekly in the 1930s was Wilfred Haughton; more info on his work can be found here: http://www.geocities.com/rick40s2007/haughton.html