▁$ 5 ▁for ▁all ▁ 3 ▁days ▁ ▁May ▁ 2 5 – 2 8 ▁( Mem orial ▁Day ▁week end ): ▁Detroit ▁Tri ple ▁F an ▁Fair ▁I , ▁( Det roit ▁Hil ton , ▁Detroit , ▁M I ) ▁— ▁guests ▁include ▁Jerry ▁B ails ▁ ▁June ▁ 2 1 – 2 4 : ▁Houston con ▁' 7 3 ▁( Mar ri ott ▁Hotel , ▁Houston , ▁Texas ) ▁— ▁c . ▁ 2 , 0 0 0 ▁at ten de es ; ▁guests ▁include ▁Kirk ▁A lyn , ▁Frank ▁C og hl an , ▁Jr ., ▁William ▁Bened ict , ▁William ▁Wit ney , ▁Dave ▁Sh ar pe , ▁Al ▁William son , ▁and ▁Don ▁Newton ; ▁convention ▁not orious ▁for ▁a ▁major ▁van ▁crash ▁involving ▁Robert ▁Be er bo hm , ▁Bud ▁Plant , ▁and ▁others ▁as ▁they ▁were ▁leaving ▁the ▁convention ▁ ▁June ▁ 2 8 – J uly ▁ 1 : ▁D - Con ▁' 7 3 ▁( S her aton ▁Hotel , ▁Dallas , ▁Texas ) ▁— ▁guests ▁include ▁Har lan ▁Ell ison , ▁William ▁G aines , ▁Bur ne ▁Hog arth , ▁and ▁Jerry ▁B ails ; ▁tick ets ▁$ 7 . 5 0 ▁at ▁the ▁door ▁ ▁July ▁ 4 – 8 : ▁Com ic ▁Art ▁Convention ▁( Hot el ▁Com mod ore , ▁New ▁York ▁City ) ▁— ▁guests ▁include ▁Dr . ▁Fred ric ▁Wer th am , ▁John ▁Put nam , ▁Jerry ▁De F uc cio , ▁Paul ▁Gul acy , ▁Bob