Yes, you can create persistent bookmarks or links to e-CFR material. If you set a link while looking at Point-in-Time data, you will always link to that date. If you set a link while looking at current data, that link will always retrieve current data. There is one caveat: Links to the part level for parts that span several volumes—for example 26 CFR part 1, 40 CFR part 52, 40 CFR part 63, and 50 CFR part 17—will occasionally change URL addresses and may break.