Judg[e]ment about acknowledg[e]ment
My 1856 edition of his dictionary shows both words with only the single spelling, sans e. By the Second Unabridged, that spelling was shown first and the spelling with e was shown second. However, all subsequent entries using the same word (phrases such as Judgment Book) are shown with only the first spelling. Further, most courts and most publishers held to the strict rule that—even though the lexicographers made it clear that two spellings juxtaposed in that way were equally acceptable, in the days of prescriptivist dictionaries—the first spelling among equals, in terms of physical placement in the dictionary, was always to be used. This was merely a practical convention to eliminate stylistic inconsistency; but it was also self-fulfilling prophecy to the extent that if all editors and publishers stuck to one spelling it would of necessity occur more often in printed work, thus influencing subsequent editions of dictionaries.
Next time you are in a bookstore, browsing some obscure aisle where self-published books occupy some of the shelf space, here's a quick test to get an idea of whether a book has gone through at least some semblance of an editing process: Flip to the front and see if Acknowledgments is spelled correctly. Check to see if there is a Foreword (a word before), too, rather than a Forward or (shudder!) a Foreward.