B: https://cisv.it/storico/rosso/bandiere3.html
https://www.araldicacivica.it/comune/biella/
G:
https://scontent-muc2-1.xx.fbcdn.net/v/t39.30808-6/495377525_993324236289987_4284243773579252014_n.jpg?_nc_cat=105&ccb=1-7&_nc_sid=833d8c&_nc_ohc=MAfkNKkiAHoQ7kNvwFXC19O&_nc_oc=Adl9Ji0uYnXkQTuNwTdSIEjiRuO0__1oIZ9fWjGVYHZPrilgQcZpugLZcAmXBF7ldWW2AYViJcz3MDaKW5TuNBN-&_nc_zt=23&_nc_ht=scontent-muc2-1.xx&_nc_gid=cGxsE-he91chbQ3rTsiLcg&oh=00_AfLtml_KlDP47M7I2i6yWDt02bxNJZh6wWBLqGmeKtD_yg&oe=68426B1F
https://scontent-muc2-1.xx.fbcdn.net/v/t39.30808-6/495584428_993130079642736_3821476795545501787_n.jpg?_nc_cat=108&ccb=1-7&_nc_sid=127cfc&_nc_ohc=xzZ-08zXrzkQ7kNvwE789Uy&_nc_oc=Adlv33fFZz5_Pc06KRH6V2n8K0jb0CQap6hMMs_1u8ziPz2gtGpzmzwdkPE21CsPUNbV7a5Avfcq9RORGwt12AwA&_nc_zt=23&_nc_ht=scontent-muc2-1.xx&_nc_gid=7N9ByDKhymcnT7KdACwMow&oh=00_AfKsJYDEZLZ9WEShH1AZMkAUycCwvMA6qA4K-ds6WZosIA&oe=684261C0
