Rabbi Avi Lebowitz of the JSN Kollel and close friend of the family delivered this moving shiur to strengthen the Palo Alto, CA community- Nosson Tzvi's hometown
http://www.dafshiur.com/2014/07/refuah-sheleima-for-nosson-tzvi-felsen.html
Rav Reuven Leuchter from Yerushalayim and Rabbi of the Felsen's gave this shiur on how to approach tefila in difficult times
http://ravleuchter.com/wp-content/plugins/download-monitor/download.php?id=799
https://vimeo.com/100993955
Shiva Assar B'tammuz kinnus gathering in NY
https://www.youtube.com/watch?v=VCEIGEfJOcU
http://www.dafshiur.com/2014/07/refuah-sheleima-for-nosson-tzvi-felsen.html
Rav Reuven Leuchter from Yerushalayim and Rabbi of the Felsen's gave this shiur on how to approach tefila in difficult times
http://ravleuchter.com/wp-content/plugins/download-monitor/download.php?id=799
https://vimeo.com/100993955
Shiva Assar B'tammuz kinnus gathering in NY
https://www.youtube.com/watch?v=VCEIGEfJOcU