Sorry Anthony, but there is no infant baptism here.<quoted text>
"Do penance: and be baptized every one of you in the name of Jesus Christ, for the remission of your sins. And you shall receive the gift of the Holy Ghost. 39 For the promise is to you and to your children and to all that are far off, whomsoever the Lord our God shall call. 40 And with very many other words did he testify and exhort them, saying: Save yourselves from this perverse generation. 41 They therefore that received his word were baptized: and there were added in that day about three thousand souls."
"Do penance and be baptized". Infants can't do that.
"The promise is to you and you children and to those that are (far off)[those who haven't even been born yet]". They aren't to be baptised now either. He is talking about the generations You,your children and those far off.(your children's children and so on.)
"THEY that RECIEVED HIS WORD were baptised" no infants here.