In the bookstore:

Immanuel Kant, Critique of Pure Reason, Paul Guyer and Allen Wood, tr. (Cambridge University Press, 1998).

Secondary sources for discussion:

Michelle Grier, “Kant on the Illusion of a Systematic Unity of Knowledge,” History of Philosophy Quarterly, vol. 14 (1997), pp. 1-28—on JSTOR at 27744728

Derk Pereboom, “Kant on Transcendental Freedom,” Philosophy and Phenomenological Research, vol. 73 (2006), pp. 537-567—on JSTOR at 40041010

Andrew Chignell, “Kant’s Concepts of Justification,” Noûs, vol. 41 (2007), pp. 61-91—on EBSCO at AN 23984248

Manley Thompson, "Singular Terms and Intuitions in Kant’s Epistemology,” The Review of Metaphysics, vol. 26 (1972), pp. 314-343—on JSTOR at 20126210

Daniel Dahlstrom, “Heidegger’s Kantian Turn: Notes to His Commentary on the ‘Kritik Der Reinen Vernunft’,” The Review of Metaphysics, vol. 45 (1991), pp. 329-361—on JSTOR at 20129178

Onora O’Neill, “Kant on Reason and Religion,” in Grethe B. Peterson (ed.), The Tanner Lectures on Human Values, vol. 18 (University of Utah Press, 1997), pp. 267-308—PDF file on the Tanner Lectures website

Richard McCarty, “Kant's Incorporation Requirement: Freedom and Character in the Empirical World,” Canadian Journal of Philosophy, vol. 38 (2008), pp. 425-451—on JSTOR at 40232364