diff --git a/etherscan/accounts.py b/etherscan/accounts.py
index 2bf7177..3da9b0d 100755
--- a/etherscan/accounts.py
+++ b/etherscan/accounts.py
@@ -25,7 +25,7 @@ def get_balance_multiple(self):
         return req['result']
 
     def get_transaction_page(self, page=1, offset=10000, sort='asc',
-                             internal=False, erc20=False) -> list:
+                             internal=False, erc20=False, erc721=False, erc1155=False) -> list:
         """
         Get a page of transactions, each transaction
         returns list of dict with keys:
@@ -63,10 +63,15 @@ def get_transaction_page(self, page=1, offset=10000, sort='asc',
         NOTE: not sure if this works for contract addresses, requires testing
         """
         if internal:
-            self.url_dict[self.ACTION] = 'txlistinternal'
+            self.url_dict[self.ACTION] = 'txlistinternal' # interact with contract
         elif erc20:
-            self.url_dict[self.ACTION] = 'tokentx'
+            self.url_dict[self.ACTION] = 'tokentx' # erc20 token trans
+        elif erc721:
+            self.url_dict[self.ACTION] = 'tokennfttx' # nfts
+        elif erc1155:
+            self.url_dict[self.ACTION] = 'token1155tx'  # nfts
         else:
+            # return 'no such category'
             self.url_dict[self.ACTION] = 'txlist'
         self.url_dict[self.PAGE] = str(page)
         self.url_dict[self.OFFSET] = str(offset)
@@ -147,12 +152,17 @@ def get_all_blocks_mined(self, blocktype='blocks', offset=10000) -> list:
                 print("page {} added".format(page_number[0]))
                 self.url_dict[self.PAGE] = str(int(page_number[0]) + 1)
 
-    def get_internal_by_hash(self, tx_hash=''):
+    def get_internal_by_hash(self, tx_hash:str):
         """
-        Currently not implemented
-        :return:
+     
         """
-        pass
+        self.url_dict[self.ACTION] = 'txlistinternal'
+        self.url_dict[self.TXHASH] = tx_hash
+        self.build_url()
+        req = self.connect()
+        return req['result']
+
+        
 
     def update_transactions(self, address, trans):
         """
diff --git a/etherscan/client.py b/etherscan/client.py
index 83da7a1..b76dde1 100755
--- a/etherscan/client.py
+++ b/etherscan/client.py
@@ -118,6 +118,7 @@ def build_url(self):
         self.url = self.PREFIX + ''.join(
             [param + val if val else '' for param, val in
              self.url_dict.items()])
+        # print(self.url)
 
     def connect(self):
         # TODO: deal with "unknown exception" error