A powerful blessing from HaRav Shimon Galai shlit"a for anyone who donates $160 to the fund for 40 orphans who are getting married in Sivan: "Whoever donates $160 for 40 orphans who are getting married in Sivan will merit to rejoice with his children in good health."
Rav Chaim gave a special blessing to those who donate to the Shovuos campaign 5778 - that they and their future generations will merit the fulfillment of the Tefillas HaShlah and they will succeed in the education of their children.
K"K MARAN THE ADMO"R M'RACHMISTRIVKA SHLIT"A PERSONALLY INSCRIBES A RARE BRACHA FOR THOSE WHO CONTRIBUTE 22O SHEKELS TO THE 22 ORPHANS GETTING MARRIED BETWEEN LAG B'OMER AND SHAVUOS: "WHOEVER CONTRIBUTES 75 $ WILL MERIT AN OUTPOURING OF BLESSINGS, AN EXTRA MEASURE OF SUCCESS IN ALL HIS ENDEAVORS, AND WILL REAP NACHAS FROM ALL HIS OFFSPRING AND KOL TUV."
32 יתומים שמתחתנים עד פסח ואין להם מאומה
Maran HaRav Chaim Kanievsky shlit"a:" Tzaddikim are greater after their deaths than they were during their lifetime. Certainly Maran ztvk"l [Maran Rosh HaYeshivan HaGaon HaRav Steinman] in heaven will plead and strive to filfill his blessing to donors to the Yesomei Shvat Fund - that they should be blessed with children, life and sufficient income - to an even greater degreee than he was able to during his lifetime and I will add my blessing to his".
Maran Rosh HaYeshiva HaGaon HaRav Gershon Edelstein shlit"a "Everyone who contributes to the 20 orphans getting married in the month of Adar should merit to marry off his own children without difficulties."