The scenes in the 22nd century occur in publication order: #8, #7, #6, #2, #1
The experiences of the majority of the First Line team occur in reverse publication order:
#2 (1958), #3 (Spring 1961), #4 (November 1963), #5 (mid/late 1960s), #6 (July 1969), #7 (June 1972), #8 (mid 1970s), #9 (1980), #10 (early 1980s), #11 (mid 1980s), #12 (years before Fantastic Four #1 in mid 1980s)
The Patrick Carney (Yankee Clipper) sequences are as follows:
#1 (1955), #2 (1958), #3 (Spring 1961), #4 (November 1963), #1 (first in mid 1980s, then just after Fantastic Four #2 in late 1980s/early 1990s)
The Velmax (Effigy, alias Jacob Scott) sequences are as follows:
#4 (1947), #1 (1955), #2 (1958), #3 (Spring 1961), #4 (November 1963), #5 (mid/late 1960s), #6 (July 1969), #7 (June 1972), #9 (1980), #10 (early 1980s), #11 (mid 1980s), #12 (years before Fantastic Four #1 in mid 1980s)
Cassandra Locke's appearances can be tracked by her personal log numbers:
#12 (years before Fantastic Four #1 in mid 1980s), #10 (early 1980s), #9 (1980), #8 (mid 1970s), #4 (Nov 1963), #7 (first during Fantastic Four #99 in 1990s, then Spring 1961), #3 (Spring 1961), #1 (1955)