She’arim B’tfiloh is a classic work on Prayer which Rav Shimshon actually wrote himself (many of the printed Seforim from Rav Shimshon are actually compilations from his public lectures etc.). I am not sure if this Sefer will be translated into English. However, there is a phenomenal Sefer from Rav Shimshons’ speeches which was published under the Title, ‘Nefesh Shimshon’. This is also a Sefer which is destined to become a classic work. The Sefer covers entire segments of our daily Prayers, with explanations and definitions behind the various Tefilos. I believe the plan is to publish this Sefer in English, in the same way that Rav Shimshons’ (Nefesh Shimshon) Sefer on Shabbos was recently translated to English.