Gruzalski, Bart. On the Buddha.
Bechert and Gombrich, eds.  The World of Buddhism.
Harvey, Peter. Introduction to Buddhism.
Harvey, Peter. Introduction to Buddhist Ethics.
Rahula, Walpola. What the Buddha Taught, rev. ed.

2. Meditation

Hsuan-Hua (Ch’an Master). The Sixth Patriarch’s Dharma Jewel Platform Sutra and Commentary.
Hsuan-Hua (Master). Listen to Yourself, Think Everything Over: Dharma Talks, vol. two.
Luk, transl. Ch’an and Zen Teachings, vol. one.

3. Biography

Luk, transl. (Hunn, ed.) Empty Cloud, the Autobiography of Chinese Zen Master Xuyun.
Nyanasampanno (Ven.), compiler. VenerablePhra Acharn Mun Bhuridatta Thera, Meditation Master.
Heng Sure and Heng Chau (Bhikshus). Letters from True Cultivators, 2 (very short) vols.

4. History

Chen, Kenneth. Buddhism in China.
Saunders, E. Dale.  Buddhism in Japan.
Hoffmann, Helmut. The Religions of Tibet.

5. Scripture

Hsuan-Hua (Ven.), commentator. The Heart of Prajna Paramita Sutra with Standless Gathas and Explanation.
Hsuan-Hua (Ven.), commentator. Shurangama Sutra, 8 vols. (OR partial translation by Luk).
Hsuan-Hua (Ven.), commentator. Wonderful Dharma Lotus Flower Sutra (OR translation by Hurvitz).
Hsuan-Hua (Ven.), commentator.  A General Explanation of the Flower Adornment (Avatamsaka) Sutra, (OR translation by Cleary).

6. Interreligious Dialogue

Lopez and Rockefeller, eds. Christ and the Bodhisattva.
Keenan, John. The Meaning of Christ: a Mahayana Theology.