Here your Blessed-self will find both books, 5 Yogoda Lessons (1925 Edition) and The Psychological Chart (1925 Edition) together, as Originally published by Swami Yoganandaji.

Republication of the First Edition. Copyright 1925, By SWAMI YOGANANDA

This is a reprint of Swami Yogananda's Course given in the year 1925, on Energization Exercises and Will-Power and includes the ancient teachings on Concentration and Meditation techniques, that one can learn from Swamiji. The value of Swamiji's insight is enormous.

You will find here, Highest Techniques of Concentration (Watch the Breath - Hong Sau) and Meditation (Listen to Vibration - Aum), that ultimately leads to Conscious Contact with Cosmic-Consciousness, over the period of consistent and intense practise. His teachings include the path of Kriya Yoga, which Yogananda called the 'Jet-Airplane' route to God, consisting of ancient yoga techniques to hasten the spiritual evolution of the disciple.

Practice it with reverence, and feel that...