Nate Oman examines the term "secret combination(s)" in the Book of Mormon and contemporary legal literature; argues that it is not dependent upon the anti-Masonry of the 19th century.
Nathan B. Oman, "'Secret Combinations': A Legal Analysis," FARMS Review 16, no. 1 (2004), 49-73
[Conclusion]
Ultimately, I think that the issue of the term secret combination and the anti-Masonic thesis comes down to a choice between two options. First is the claim that secret combination carried such an exclusively anti-Masonic meaning that its use in the Book of Mormon, especially with regard to latter-day prophecies, was a direct and intentional reference to Masonry. This position depends on the exclusivity and uniqueness of the anti-Masonic use of the term. The second position is that the term had a broader meaning and cannot be read as a simple reference to Masonry. This position does not involve a denial that anti-Masonry may have changed the connotation of the term in some contexts or that anti-Masonic uses of the phrase are useful in understanding the original language of the Book of Mormon translation. However, it does involve the claim that secret combination had a broader meaning than that attributed to it by proponents of the anti-Masonic thesis. I believe that the legal materials discussed in this paper severely undermine the first position and suggest that the phrase secret combination cannot be read as a simple reference to Masonry. On the contrary, judicial opinions from the early nineteenth century provide numerous, concrete examples of non-Masonic uses of the term.