Dear SaiBandhu,
Please go through this link to see the information on Kalyan (Hindi version) or Kalyana-Kalpataru (English version) Spiritual monthly Magazine run by Gita Press, Gorakhpur.
You can download one issue and gothrough it to see the kind collection of articles they publish.
In Sri Pakalapati guruvu gari charitra (Neenu Darsinchina Mahatmulu-1), there is a mention of the articles from this magazine.