the white one is what they call milk glass. i'm not sure but my guess would be that it held cold cream. bromo seltzer was around along time. i've seen alot of cork type but yours is the 1st screw top i've seen. where did ya'll find them?
post a picture of the milk bottle and describe all of the embossing. if someone here can date the milk bottle, then that would give an approx date for the all the bottles