diff --git a/marc_to_solr/lib/format/bib_format.rb b/marc_to_solr/lib/format/bib_format.rb
index 7918af75..8f443caf 100644
--- a/marc_to_solr/lib/format/bib_format.rb
+++ b/marc_to_solr/lib/format/bib_format.rb
@@ -12,8 +12,10 @@ def initialize(record)
     ldr = record.leader
     type = ldr[6]
     lev  = ldr[7]
+    check_pulfa = record['035'] && record['035']['a'].start_with?('(PULFA)')
+    check_dacs = record['040'] && record['040']['e'] == 'dacs'
     @code = []
-    @code << self.determine_bib_code(type, lev)
+    @code << self.determine_bib_code(type, lev, check_pulfa, check_dacs)
     @code << 'WM' if microform? record
     @code = @code.flatten
     # Removed per @tampakis recommendation to keep items with an unknown format
@@ -21,7 +23,7 @@ def initialize(record)
     # @code << 'XX' if @code.empty?
   end
 
-  def determine_bib_code(type, lev)
+  def determine_bib_code(type, lev, check_pulfa, check_dacs)
     format = []
     format << "AJ" if bibformat_jn(type, lev) # journal
     format << "CF" if bibformat_cf(type, lev) # data file
@@ -31,13 +33,14 @@ def determine_bib_code(type, lev)
     format << "AU" if bibformat_au(type, lev) # audio
     format << "MP" if bibformat_mp(type, lev) # map
     format << "MW" if bibformat_mw(type, lev) # manuscript
-    format << "BK" if bibformat_bk(type, lev) # book
+    format << "BK" if bibformat_bk(type, lev, check_pulfa) # book
     format << "DB" if bibformat_db(type, lev) # databases
+    format << "XA" if bibformat_xa(type, lev, check_pulfa, check_dacs) # archival item
     format
   end
 
-  def bibformat_bk(type, lev)
-    (type == 't') || ((type == 'a') && %w[a b c d m].include?(lev))
+  def bibformat_bk(type, lev, check_pulfa)
+    ((type == 't') && !check_pulfa) || ((type == 'a') && %w[a b c d m].include?(lev))
   end
 
   def bibformat_db(type, lev)
@@ -76,6 +79,10 @@ def bibformat_mw(type, _lev)
     %w[d f p t].include?(type)
   end
 
+  def bibformat_xa(type, lev, check_pulfa, check_dacs)
+    (type == 't') && (lev == 'm') && check_pulfa && check_dacs
+  end
+
   private
 
     def microform?(record)
diff --git a/marc_to_solr/translation_maps/format.rb b/marc_to_solr/translation_maps/format.rb
index b6aa4fad..e73e41c0 100644
--- a/marc_to_solr/translation_maps/format.rb
+++ b/marc_to_solr/translation_maps/format.rb
@@ -35,6 +35,7 @@
   "VL" => "Motion picture",
   "VM" => "Visual material",
   "VP" => "Video/Projected medium",
+  "XA" => "Archival Item",
   "WM" => "Microform",
   "XC" => "Conference",
   "XS" => "Statistics",
diff --git a/spec/marc_to_solr/lib/format_spec.rb b/spec/marc_to_solr/lib/format_spec.rb
index 3f2a3799..6f29d9ea 100644
--- a/spec/marc_to_solr/lib/format_spec.rb
+++ b/spec/marc_to_solr/lib/format_spec.rb
@@ -13,10 +13,39 @@
     'Musical score' => ['c ', 'd '],
     'Audio' => ['i ', 'j '],
     'Map' => ['e '],
-    'Manuscript' => ['d ', 'f ', 't ', 'p ']
-    # 'Unknown' => ['  ', 'zz']
+    'Manuscript' => ['d ', 'f ', 't ', 'p '], 
+    'Archival Item' => ['tm']
   }.each do |k, v|
     it "properly determines format for #{k}" do
+      v.each do |c|
+        marc.leader[6..7] = c
+
+        if marc.leader[6] == 'a'
+          field = MARC::DataField.new('035','0','0',
+          MARC::Subfield.new('a', '(PULFA)'))
+          marc.append(field)
+        end
+
+        if c == 'tm'
+          field = MARC::DataField.new('035','0','0',
+          MARC::Subfield.new('a', '(PULFA)'))
+          marc.append(field)
+          field = MARC::DataField.new('040','0','0',
+          MARC::Subfield.new('e', 'dacs'))
+          marc.append(field)
+        end
+        fmt = Format.new(marc).bib_format
+        expect(Traject::TranslationMap.new("format").translate_array!(fmt)).to include k
+      end
+    end
+  end
+
+let(:marc) { MARC::Record.new }
+
+  {
+    'Book' => ['tm']
+  }.each do |k, v|
+    it "properly determines format for 'tm' when the record is non-PULFA" do
       v.each do |c|
         marc.leader[6..7] = c
         fmt = Format.new(marc).bib_format