Show TRACE ORIGIN OF I WALL ST RUMORS I NEW YORK June Juno The 23 23 3 The I York stock tock exchange today began an In his ln to deter I deter deter- determine mine It If possible the source Murce ot of rumors question In e the solvency of large e brokerage firms firing and request request- requesting inc st copies otI I ing wire TUro houses to submit copies of nil alt communications sent and Ind re- re re received eel ed oer o'er their primate lines for tor forthe the t two 0 end ng today tolay torI I |