ComiCrazys has posted twelve Hey Look! single-page comic strips (in colour) and nine Mad covers (also in colour) by the late, great Harvey Kurtzman for your viewing enjoyment, but they don’t have this one:
Coming soon to a bookstore near you! You can read the entire first issue of Humbug, beautifully restored, in an EXCLUSIVE 32-page PDF (7.6 MB) available via the link on this page.
I don’t own these; I just rescued the scans from ebay.