Question re: Mormon canon

MJ. Smith

I just discovered that, according to a semi-respectable source, that the smaller groups of Latter Day Saints sometimes have additional books in their canon beyond the 4 books we are used to thinking of as sacred LDS texts. Is the some reliable LDS source that can identify these additional books and the groups that use them? Sorry, folks, I would make this question more Logos oriented if Logos offered a reasonable package of LDS sources.

Ben

This is true, but not distributed evenly. That is, the primary branch has 15 million members; the second largest (Community of Christ, formerly Reorganized Church of Jesus Christ of Latter-day Saints) has 250k, and others under 10k members. 

• The CoC has added further sections (and removed some iirc) from their edition of the Doctrine and Covenants. 
• A recent break-off under Denver Snuffer treats some of his writings as authoritative, but this is an informal "movement." 
• The Strangites (130 members today) recognize some of James Strang's writings as authoritative.