I will not say this is a fact beyond any doubt, but I have seen it claimed that the York rite has a total of 13 degrees, of which the last three are more or less unknown to the lower degree masons. Along with this claim I saw a masonic drawing portraying the degrees, which included these extra York rite degrees (it was an artistic drawing not a chart-like description, and I did not see any names of these degrees in it). Δǂ   Δǂ 

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