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I have just posted, in the Links section of this group, https://groups.yahoo.com/neo/groups/maimonides/links/all, a link to Maimonides' Book of Logic (Sefer ha-Higayon), Eng. Trans. Israel Efros.
The PDF is http://www.cs.technion.ac.il/~janos/MAIMONIDES-TREATISE-ON-LOGIC.pdf
I have also posted it to the Links section of my Guide of the Perplexed website: https://www.maimonides-guide.com/links
Scott Alexander