More like The Cascade Preppers

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Z for ZachariahNovel
Robert C. O'Brienstandalone novel1975
About coming of age and loneliness, set in countryside & village.
“Sixteen-year-old Ann Burden, on an Amish family farm in an isolated valley, believes she is the only survivor of nuclear war and nerve gas.”
from the catalogue
Farnham's FreeholdNovel
Robert A. Heinleinstandalone novel1964
Time travel, about race and racism.
The FiremanNovel
Joe Hillstandalone novel2016
Dark in tone, about plague and pandemic and found family.
TripodsSeries
series4 books1967
completed
Alien invasion, about aliens and rebellion and revolution.
“The first two books were the basis of a science fiction TV series, produced in the United Kingdom in the 1980s.”
from the catalogue
Start with When the Tripods Came →
The TriffidsSeries
series3 books1951
Dark in tone, set in british isles.
“Together the three novels form a loose post-apocalyptic trilogy built on Wyndham's original premise rather than a tightly plotted single story.”
from the catalogue
Start with The Day of the Triffids →
I Am LegendNovel
Richard Mathesonstandalone novel1954
Horror, about vampires and last of their kind, set in mid 20th century.
“The last human survivor of the vampire epidemic has to maintain his defences against their onslaught, while attempting to research the cause and possibly solution to the plague.”
from the catalogue